Submitted via IRC for TheMightyBuzzard
The big SteamOS beta update that Valve shipped last month has now officially been released into the stable updates branch.
Source: https://www.gamingonlinux.com/articles/the-big-steamos-update-that-drops-amdgpu-pro-in-favour-of-mesa-has-left-beta.9789 [gamingonlinux.com]