Proton 11.0-1 Beta 3 brings FEX upgrades for Linux ARM64 (like the Steam Frame)

Valve released the latest Beta for Proton 11 which brings with it an upgrade for FEX, the emulator to run x86 applications on ARM64 Linux devices.

FEX is part of the special sauce that together with Proton and Lepton will enable many x86 Windows games to run on the upcoming Steam Frame which uses SteamOS Linux as the operating system.

The proton-11.0-1-beta3 changelog on Valve's Proton GitHub page notes:

• Updated to FEX-2605.

The FEX changelogs are always quite detailed and heavy on the low-level stuff so the gist for FEX-2605 release brings: various performance improvements for 32-bit and 64-bit games, fixed a crash with controllers and lots of work towards proper support for the Snapdragon X2 Elite.

Valve's main Proton changelog states that Proton Experimental also has the Proton 11 Beta 3 changes.

If you missed other recent Steam Frame related news - Unreal Engine 5.8 adds experimental Steam Frame support, Qualcomm give the Steam Frame a dedicated page. GamingOnLinux also previously covered the different ways games will run on Valve's Steam Frame.

Hopefully the release announcement for the Frame isn't far off now!