diff --git a/minecraft/16w20a.json b/minecraft/16w20a.json
deleted file mode 100644
index 5d62f27..0000000
--- a/minecraft/16w20a.json
+++ /dev/null
@@ -1,330 +0,0 @@
-{
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\ No newline at end of file
diff --git a/minecraft/16w21b.json b/minecraft/16w21b.json
deleted file mode 100644
index d913296..0000000
--- a/minecraft/16w21b.json
+++ /dev/null
@@ -1,330 +0,0 @@
-{
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-                    "url": "https://libraries.minecraft.net/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar"
-                }
-            },
-            "name": "com.paulscode:soundsystem:20120107"
-        },
-        {
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-                    "size": 1779991,
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-            "name": "io.netty:netty-all:4.0.23.Final"
-        },
-        {
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-                "artifact": {
-                    "path": "com/google/guava/guava/17.0/guava-17.0.jar",
-                    "sha1": "9c6ef172e8de35fd8d4d8783e4821e57cdef7445",
-                    "size": 2243036,
-                    "url": "https://libraries.minecraft.net/com/google/guava/guava/17.0/guava-17.0.jar"
-                }
-            },
-            "name": "com.google.guava:guava:17.0"
-        },
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-                    "url": "https://libraries.minecraft.net/org/apache/commons/commons-lang3/3.3.2/commons-lang3-3.3.2.jar"
-                }
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-                    "sha1": "b1b6ea3b7e4aa4f492509a4952029cd8e48019ad",
-                    "size": 185140,
-                    "url": "https://libraries.minecraft.net/commons-io/commons-io/2.4/commons-io-2.4.jar"
-                }
-            },
-            "name": "commons-io:commons-io:2.4"
-        },
-        {
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-                "artifact": {
-                    "path": "commons-codec/commons-codec/1.9/commons-codec-1.9.jar",
-                    "sha1": "9ce04e34240f674bc72680f8b843b1457383161a",
-                    "size": 263965,
-                    "url": "https://libraries.minecraft.net/commons-codec/commons-codec/1.9/commons-codec-1.9.jar"
-                }
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-            "name": "commons-codec:commons-codec:1.9"
-        },
-        {
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-                "artifact": {
-                    "path": "com/google/code/gson/gson/2.2.4/gson-2.2.4.jar",
-                    "sha1": "a60a5e993c98c864010053cb901b7eab25306568",
-                    "size": 190432,
-                    "url": "https://libraries.minecraft.net/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar"
-                }
-            },
-            "name": "com.google.code.gson:gson:2.2.4"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "com/mojang/authlib/1.5.22/authlib-1.5.22.jar",
-                    "sha1": "afaa8f6df976fcb5520e76ef1d5798c9e6b5c0b2",
-                    "size": 64539,
-                    "url": "https://libraries.minecraft.net/com/mojang/authlib/1.5.22/authlib-1.5.22.jar"
-                }
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-            "name": "com.mojang:authlib:1.5.22"
-        },
-        {
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-                    "path": "com/mojang/realms/1.8.19/realms-1.8.19.jar",
-                    "sha1": "f7469a9307b962d1097e44713eb1baa087c06e43",
-                    "size": 1575795,
-                    "url": "https://libraries.minecraft.net/com/mojang/realms/1.8.19/realms-1.8.19.jar"
-                }
-            },
-            "name": "com.mojang:realms:1.8.19"
-        },
-        {
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-                "artifact": {
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-                    "sha1": "a698750c16740fd5b3871425f4cb3bbaa87f529d",
-                    "size": 365552,
-                    "url": "https://libraries.minecraft.net/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar"
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-        },
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-                    "path": "org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar",
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-                    "url": "https://libraries.minecraft.net/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar"
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-        },
-        {
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-                    "sha1": "f6f66e966c70a83ffbdb6f17a0919eaf7c8aca7f",
-                    "size": 62050,
-                    "url": "https://libraries.minecraft.net/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar"
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-        },
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-                    "path": "org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar",
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-                    "size": 282269,
-                    "url": "https://libraries.minecraft.net/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar"
-                }
-            },
-            "name": "org.apache.httpcomponents:httpcore:4.3.2"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "it/unimi/dsi/fastutil/7.0.12_mojang/fastutil-7.0.12_mojang.jar",
-                    "sha1": "ba787e741efdc425fc5d2ea654b57c15fba27efa",
-                    "size": 522306,
-                    "url": "https://libraries.minecraft.net/it/unimi/dsi/fastutil/7.0.12_mojang/fastutil-7.0.12_mojang.jar"
-                }
-            },
-            "name": "it.unimi.dsi:fastutil:7.0.12_mojang"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "org/apache/logging/log4j/log4j-api/2.0-beta9/log4j-api-2.0-beta9.jar",
-                    "sha1": "1dd66e68cccd907880229f9e2de1314bd13ff785",
-                    "size": 108161,
-                    "url": "https://libraries.minecraft.net/org/apache/logging/log4j/log4j-api/2.0-beta9/log4j-api-2.0-beta9.jar"
-                }
-            },
-            "name": "org.apache.logging.log4j:log4j-api:2.0-beta9"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "org/apache/logging/log4j/log4j-core/2.0-beta9/log4j-core-2.0-beta9.jar",
-                    "sha1": "678861ba1b2e1fccb594bb0ca03114bb05da9695",
-                    "size": 681134,
-                    "url": "https://libraries.minecraft.net/org/apache/logging/log4j/log4j-core/2.0-beta9/log4j-core-2.0-beta9.jar"
-                }
-            },
-            "name": "org.apache.logging.log4j:log4j-core:2.0-beta9"
-        }
-    ],
-    "logging": {
-        "client": {
-            "argument": "-Dlog4j.configurationFile=${path}",
-            "file": {
-                "id": "client-1.7.xml",
-                "sha1": "49e2e41bc339698bd8199e0da9398c926e68c95d",
-                "size": 467,
-                "url": "https://launchermeta.mojang.com/mc/log_configs/client-1.7.xml/49e2e41bc339698bd8199e0da9398c926e68c95d/client-1.7.xml"
-            },
-            "type": "log4j2-xml"
-        }
-    },
-    "mainClass": "net.minecraft.client.main.Main",
-    "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${assets_root} --assetIndex ${assets_index_name} --uuid ${auth_uuid} --accessToken ${auth_access_token} --userType ${user_type} --versionType ${version_type}",
-    "minimumLauncherVersion": 18,
-    "name": "Minecraft",
-    "releaseTime": "2016-05-26T12:47:22+00:00",
-    "time": "2016-06-01T11:45:48+00:00",
-    "type": "snapshot"
-}
\ No newline at end of file
diff --git a/minecraft/1.11-pre1.json b/minecraft/16w50a.json
similarity index 94%
rename from minecraft/1.11-pre1.json
rename to minecraft/16w50a.json
index e50fdd4..b4d0c88 100644
--- a/minecraft/1.11-pre1.json
+++ b/minecraft/16w50a.json
@@ -9,17 +9,17 @@
     "assets": "1.11",
     "downloads": {
         "client": {
-            "sha1": "fdc07c099ad33f77c426464754841747a09ee8d7",
-            "size": 9183464,
-            "url": "https://launcher.mojang.com/mc/game/1.11-pre1/client/fdc07c099ad33f77c426464754841747a09ee8d7/client.jar"
+            "sha1": "925650c3ed9e1e79dd3f846a49a9de3a7f8e700c",
+            "size": 9194941,
+            "url": "https://launcher.mojang.com/mc/game/16w50a/client/925650c3ed9e1e79dd3f846a49a9de3a7f8e700c/client.jar"
         },
         "server": {
-            "sha1": "7e2884f11e3fb52ed1ad82376e3cada3aa95152e",
-            "size": 9713399,
-            "url": "https://launcher.mojang.com/mc/game/1.11-pre1/server/7e2884f11e3fb52ed1ad82376e3cada3aa95152e/server.jar"
+            "sha1": "d4d30a5433846d205974ace4cf34c9b294e0833f",
+            "size": 9720347,
+            "url": "https://launcher.mojang.com/mc/game/16w50a/server/d4d30a5433846d205974ace4cf34c9b294e0833f/server.jar"
         }
     },
-    "id": "1.11-pre1",
+    "id": "16w50a",
     "libraries": [
         {
             "downloads": {
@@ -222,13 +222,13 @@
         {
             "downloads": {
                 "artifact": {
-                    "path": "com/mojang/realms/1.10.0/realms-1.10.0.jar",
-                    "sha1": "e73c98944e2170f895357a703c3322bcd68d1699",
-                    "size": 1493992,
-                    "url": "https://libraries.minecraft.net/com/mojang/realms/1.10.0/realms-1.10.0.jar"
+                    "path": "com/mojang/realms/1.10.1/realms-1.10.1.jar",
+                    "sha1": "d6369254de32e6e23866c7d99d1d081c2dba11fa",
+                    "size": 1463224,
+                    "url": "https://libraries.minecraft.net/com/mojang/realms/1.10.1/realms-1.10.1.jar"
                 }
             },
-            "name": "com.mojang:realms:1.10.0"
+            "name": "com.mojang:realms:1.10.1"
         },
         {
             "downloads": {
@@ -324,7 +324,7 @@
     "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${assets_root} --assetIndex ${assets_index_name} --uuid ${auth_uuid} --accessToken ${auth_access_token} --userType ${user_type} --versionType ${version_type}",
     "minimumLauncherVersion": 18,
     "name": "Minecraft",
-    "releaseTime": "2016-11-08T13:42:50+00:00",
-    "time": "2016-11-14T14:52:54+00:00",
+    "releaseTime": "2016-12-15T14:38:52+00:00",
+    "time": "2016-12-15T14:39:44+00:00",
     "type": "snapshot"
 }
\ No newline at end of file
diff --git a/version_manifest.json b/version_manifest.json
index 9c5699a..924927e 100644
--- a/version_manifest.json
+++ b/version_manifest.json
@@ -1,9 +1,16 @@
 {
     "latest": {
         "release": "1.11",
-        "snapshot": "1.11"
+        "snapshot": "16w50a"
     },
     "versions": [
+        {
+            "id": "16w50a",
+            "releaseTime": "2016-12-15T14:38:52+00:00",
+            "time": "2016-12-15T14:39:44+00:00",
+            "type": "snapshot",
+            "url": "https://launchermeta.mojang.com/mc/game/e913d0001d077f341a5c71754ad7766c552e875e/16w50a.json"
+        },
         {
             "id": "1.11",
             "releaseTime": "2016-11-14T14:34:40+00:00",
@@ -11,13 +18,6 @@
             "type": "release",
             "url": "https://launchermeta.mojang.com/mc/game/7a3e41e164f3e3124c05a8bc782bba466d20c431/1.11.json"
         },
-        {
-            "id": "1.11-pre1",
-            "releaseTime": "2016-11-08T13:42:50+00:00",
-            "time": "2016-11-14T14:52:54+00:00",
-            "type": "snapshot",
-            "url": "https://launchermeta.mojang.com/mc/game/7dfcb37dd7f2c354b6cb10896f791df6a32151dc/1.11-pre1.json"
-        },
         {
             "id": "16w44a",
             "releaseTime": "2016-11-03T14:17:11+00:00",
@@ -116,20 +116,6 @@
             "type": "release",
             "url": "https://launchermeta.mojang.com/mc/game/281697b6f88d757066b5f0427b40ffabc50e79b9/1.10.json"
         },
-        {
-            "id": "16w21b",
-            "releaseTime": "2016-05-26T12:47:22+00:00",
-            "time": "2016-06-01T11:45:48+00:00",
-            "type": "snapshot",
-            "url": "https://launchermeta.mojang.com/mc/game/746adc2f6244d1f4ea5f654ebb4038c56b7ce503/16w21b.json"
-        },
-        {
-            "id": "16w20a",
-            "releaseTime": "2016-05-18T12:45:14+00:00",
-            "time": "2016-06-01T11:45:48+00:00",
-            "type": "snapshot",
-            "url": "https://launchermeta.mojang.com/mc/game/36e5b5b5516089a314cee1fa6165cc1e075416b1/16w20a.json"
-        },
         {
             "id": "1.9.4",
             "releaseTime": "2016-05-10T10:17:16+00:00",
diff --git a/versions/16w20a.json b/versions/16w20a.json
deleted file mode 100644
index 01d8ae0..0000000
--- a/versions/16w20a.json
+++ /dev/null
@@ -1,563 +0,0 @@
-{
-    "assetIndex": {
-        "id": "1.9",
-        "sha1": "8549e8aca91ee8b8d1620e9e8252d477f16a56d5",
-        "size": 137552,
-        "totalSize": 120896362,
-        "url": "https://launchermeta.mojang.com/mc/assets/1.9/8549e8aca91ee8b8d1620e9e8252d477f16a56d5/1.9.json"
-    },
-    "assets": "1.9",
-    "downloads": {
-        "client": {
-            "sha1": "73de5728b610cf31bcc9c497447856374893249d",
-            "size": 8841325,
-            "url": "https://launcher.mojang.com/mc/game/16w20a/client/73de5728b610cf31bcc9c497447856374893249d/client.jar"
-        },
-        "server": {
-            "sha1": "2cbcbd735cb48c8cc2bebb7b43c8afa69a923269",
-            "size": 9447434,
-            "url": "https://launcher.mojang.com/mc/game/16w20a/server/2cbcbd735cb48c8cc2bebb7b43c8afa69a923269/server.jar"
-        }
-    },
-    "id": "16w20a",
-    "libraries": [
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "com/mojang/netty/1.6/netty-1.6.jar",
-                    "sha1": "4b75825a06139752bd800d9e29c5fd55b8b1b1e4",
-                    "size": 7877,
-                    "url": "https://libraries.minecraft.net/com/mojang/netty/1.6/netty-1.6.jar"
-                }
-            },
-            "name": "com.mojang:netty:1.6"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "oshi-project/oshi-core/1.1/oshi-core-1.1.jar",
-                    "sha1": "9ddf7b048a8d701be231c0f4f95fd986198fd2d8",
-                    "size": 30973,
-                    "url": "https://libraries.minecraft.net/oshi-project/oshi-core/1.1/oshi-core-1.1.jar"
-                }
-            },
-            "name": "oshi-project:oshi-core:1.1"
-        },
-        {
-            "downloads": {
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-                    "path": "net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar",
-                    "sha1": "803ff252fedbd395baffd43b37341dc4a150a554",
-                    "size": 1008730,
-                    "url": "https://libraries.minecraft.net/net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar"
-                }
-            },
-            "name": "net.java.dev.jna:jna:3.4.0"
-        },
-        {
-            "downloads": {
-                "artifact": {
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-            },
-            "name": "net.java.dev.jna:platform:3.4.0"
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-        {
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-            },
-            "name": "com.ibm.icu:icu4j-core-mojang:51.2"
-        },
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-            "name": "com.paulscode:codecjorbis:20101023"
-        },
-        {
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-            },
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-        },
-        {
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-                    "path": "com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar",
-                    "sha1": "5c5e304366f75f9eaa2e8cca546a1fb6109348b3",
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-                    "url": "https://libraries.minecraft.net/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar"
-                }
-            },
-            "name": "com.paulscode:libraryjavasound:20101123"
-        },
-        {
-            "downloads": {
-                "artifact": {
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-                    "sha1": "73e80d0794c39665aec3f62eee88ca91676674ef",
-                    "size": 18981,
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-                }
-            },
-            "name": "com.paulscode:librarylwjglopenal:20100824"
-        },
-        {
-            "downloads": {
-                "artifact": {
-                    "path": "com/paulscode/soundsystem/20120107/soundsystem-20120107.jar",
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\ No newline at end of file
diff --git a/versions/16w21b.json b/versions/16w21b.json
deleted file mode 100644
index 5027a28..0000000
--- a/versions/16w21b.json
+++ /dev/null
@@ -1,563 +0,0 @@
-{
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-                        "url": "https://libraries.minecraft.net/org/lwjgl/lwjgl/lwjgl-platform/2.9.2-nightly-20140822/lwjgl-platform-2.9.2-nightly-20140822-natives-windows.jar"
-                    }
-                }
-            },
-            "extract": {
-                "exclude": [
-                    "META-INF/"
-                ]
-            },
-            "name": "org.lwjgl.lwjgl:lwjgl-platform:2.9.2-nightly-20140822",
-            "natives": {
-                "linux": "natives-linux",
-                "osx": "natives-osx",
-                "windows": "natives-windows"
-            },
-            "rules": [
-                {
-                    "action": "allow",
-                    "os": {
-                        "name": "osx"
-                    }
-                }
-            ]
-        },
-        {
-            "downloads": {
-                "classifiers": {
-                    "natives-linux": {
-                        "path": "net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-linux.jar",
-                        "sha1": "7ff832a6eb9ab6a767f1ade2b548092d0fa64795",
-                        "size": 10362,
-                        "url": "https://libraries.minecraft.net/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-linux.jar"
-                    },
-                    "natives-osx": {
-                        "path": "net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-osx.jar",
-                        "sha1": "53f9c919f34d2ca9de8c51fc4e1e8282029a9232",
-                        "size": 12186,
-                        "url": "https://libraries.minecraft.net/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-osx.jar"
-                    },
-                    "natives-windows": {
-                        "path": "net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-windows.jar",
-                        "sha1": "385ee093e01f587f30ee1c8a2ee7d408fd732e16",
-                        "size": 155179,
-                        "url": "https://libraries.minecraft.net/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-windows.jar"
-                    }
-                }
-            },
-            "extract": {
-                "exclude": [
-                    "META-INF/"
-                ]
-            },
-            "name": "net.java.jinput:jinput-platform:2.0.5",
-            "natives": {
-                "linux": "natives-linux",
-                "osx": "natives-osx",
-                "windows": "natives-windows"
-            }
-        }
-    ],
-    "logging": {
-        "client": {
-            "argument": "-Dlog4j.configurationFile=${path}",
-            "file": {
-                "id": "client-1.7.xml",
-                "sha1": "49e2e41bc339698bd8199e0da9398c926e68c95d",
-                "size": 467,
-                "url": "https://launchermeta.mojang.com/mc/log_configs/client-1.7.xml/49e2e41bc339698bd8199e0da9398c926e68c95d/client-1.7.xml"
-            },
-            "type": "log4j2-xml"
-        }
-    },
-    "mainClass": "net.minecraft.client.main.Main",
-    "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${assets_root} --assetIndex ${assets_index_name} --uuid ${auth_uuid} --accessToken ${auth_access_token} --userType ${user_type} --versionType ${version_type}",
-    "minimumLauncherVersion": 18,
-    "releaseTime": "2016-05-26T12:47:22+00:00",
-    "time": "2016-06-01T11:45:48+00:00",
-    "type": "snapshot"
-}
\ No newline at end of file
diff --git a/versions/1.11-pre1.json b/versions/16w50a.json
similarity index 96%
rename from versions/1.11-pre1.json
rename to versions/16w50a.json
index 65b40f0..8c1880f 100644
--- a/versions/1.11-pre1.json
+++ b/versions/16w50a.json
@@ -9,17 +9,17 @@
     "assets": "1.11",
     "downloads": {
         "client": {
-            "sha1": "fdc07c099ad33f77c426464754841747a09ee8d7",
-            "size": 9183464,
-            "url": "https://launcher.mojang.com/mc/game/1.11-pre1/client/fdc07c099ad33f77c426464754841747a09ee8d7/client.jar"
+            "sha1": "925650c3ed9e1e79dd3f846a49a9de3a7f8e700c",
+            "size": 9194941,
+            "url": "https://launcher.mojang.com/mc/game/16w50a/client/925650c3ed9e1e79dd3f846a49a9de3a7f8e700c/client.jar"
         },
         "server": {
-            "sha1": "7e2884f11e3fb52ed1ad82376e3cada3aa95152e",
-            "size": 9713399,
-            "url": "https://launcher.mojang.com/mc/game/1.11-pre1/server/7e2884f11e3fb52ed1ad82376e3cada3aa95152e/server.jar"
+            "sha1": "d4d30a5433846d205974ace4cf34c9b294e0833f",
+            "size": 9720347,
+            "url": "https://launcher.mojang.com/mc/game/16w50a/server/d4d30a5433846d205974ace4cf34c9b294e0833f/server.jar"
         }
     },
-    "id": "1.11-pre1",
+    "id": "16w50a",
     "libraries": [
         {
             "downloads": {
@@ -244,13 +244,13 @@
         {
             "downloads": {
                 "artifact": {
-                    "path": "com/mojang/realms/1.10.0/realms-1.10.0.jar",
-                    "sha1": "e73c98944e2170f895357a703c3322bcd68d1699",
-                    "size": 1493992,
-                    "url": "https://libraries.minecraft.net/com/mojang/realms/1.10.0/realms-1.10.0.jar"
+                    "path": "com/mojang/realms/1.10.1/realms-1.10.1.jar",
+                    "sha1": "d6369254de32e6e23866c7d99d1d081c2dba11fa",
+                    "size": 1463224,
+                    "url": "https://libraries.minecraft.net/com/mojang/realms/1.10.1/realms-1.10.1.jar"
                 }
             },
-            "name": "com.mojang:realms:1.10.0"
+            "name": "com.mojang:realms:1.10.1"
         },
         {
             "downloads": {
@@ -557,7 +557,7 @@
     "mainClass": "net.minecraft.client.main.Main",
     "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${assets_root} --assetIndex ${assets_index_name} --uuid ${auth_uuid} --accessToken ${auth_access_token} --userType ${user_type} --versionType ${version_type}",
     "minimumLauncherVersion": 18,
-    "releaseTime": "2016-11-08T13:42:50+00:00",
-    "time": "2016-11-14T14:52:54+00:00",
+    "releaseTime": "2016-12-15T14:38:52+00:00",
+    "time": "2016-12-15T14:39:44+00:00",
     "type": "snapshot"
 }
\ No newline at end of file