>no post mentioning the toolbox update
https://hello.vrchat.com/blog/creator-toolbox-update
They're replacing the SDK with this for avatars and worlds. It autoupdates, includes new official versions of CyanEmu and UdonSharp, converts your old projects to the new system automatically, and lives in the Packages folder instead of cluttering up your Assets folder. Every update automatically does a fresh install of everything so you don't have to worry about that either.