The Phawx just showed off an Asus ROG Ally running an early build of SteamOS. While most of its functions work, there are still a few kinks that need to be ironed out, like the TDP slider. https://www.notebookcheck.net/YouTuber-successfully-boots-SteamOS-on-an-Asus-ROG-Ally.986003.0.html
I have been eagerly awaiting this version of SteamOS on my Ally I don't care about games that have anticheat support because I generally don't play those games I rarely ever use anything but Steam on my Ally as well I would much rather have a more efficient OS and features then to use Windows 11.