This would presumably let x86 windows games run on ARM hardware.
This is almost certainly meant for the next Valve VR headset, but ARM has so much better power efficiency than x86 that a future ARM based Deck would be a huge improvement to battery life.
Also see this tweet:
VR games that have already secretly pushed Android ARM builds onto the Steam Store are ran via Waydroid (androidARM to LinuxARM)
VR games that do not have an ARM build on Steam (windows x86) are being translated/emulated via ProtonARM and FEX
Edit: here’s gamingonlinux coverage of this info, includes some more information
Imagine someone can game on their Mac using ashi linux or heck even your phone
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yeah true i dont rlly have a mac but imagine gaming on apples m4 chips
Android loves mice and keyboards. A lot of games now support gamepad pretty well too.
I’ve been gaming on my phone using parsec to remote steam and bring the controls back to my gamepad.