This release is compatible with 1.4.6 and has almost no bytecode changes, so mods that have been updated for 1.4.6 should work in 1.4.7 too. The only affected file is the one called “qz”, which is the arrow projectile’s class. This also means that 1.4.6 clients can play on 1.4.7 servers, and 1.4.7 clients on 1.4.6 servers? so we’ll wait until after New Year’s Eve before we publish it in the launcher. Download the pre-release if you want these problems fixed before then!
The fixes are:
I would recommend backing up your old Minecraft.jar somewhere so that you can keep all of your current mods. You can do this by just copying Minecraft.jar and pasting it into another folder.
The client now comes with both the client-side and the server-side JAR files. The file called “minecraft.jar” should be in your “.minecraft/bin” folder as usual, and the “minecraft_server.jar” file should be in a folder called “.minecraft/server”.
Credits: The Minecraft Team