The current, unavailable for general download, is Steam OS 3. Valve just refuses to put a number 3 anywhere, do they just pretend the other two do not exist.
BTW, there are a few “almost steam os” out there. I can vouch for Bazzite, it’s fedora based and really good. Very welcoming for beginners, but had a lot of options of you want to dig a bit.
There used to be though. I have it on a DVD. SteamOS is much older than the SteamDeck.
The name is old, but there are distinct distributions. Debian vs Arch.
The current, unavailable for general download, is Steam OS 3. Valve just refuses to put a number 3 anywhere, do they just pretend the other two do not exist.
BTW, there are a few “almost steam os” out there. I can vouch for Bazzite, it’s fedora based and really good. Very welcoming for beginners, but had a lot of options of you want to dig a bit.