Is steamOS now official on other devices than the legion Go S?

I'm asking because I got an update for steam today on my HT console that is running Bazzite OS and I checked the changelog, and some of the fixes pertained to some "non-deck" devices then they went on to list ROG Ally x and onexplayer... Etc. Is it now official? Does that mean I can now grab steamOS and install it on my onexplayer?