The past few days we have been reporting on Valve’s Steam client coming to Linux (and some of the Source Engine games too) soon as we had found Linux references within the Steam Mac OS X client and then other Linux references. We even ended up finding the unreleased Linux files on the Valve servers.
These files included the Steam Linux client binary and all of the other Linux libraries that are needed for the client. These files haven’t just been sitting around, but Valve has actively been updating the Linux-specific bits as we noted yesterday. However, exposing Steam / Source is indeed coming over to Linux, prior to Valve announcing it, has generated a fair amount of attention around the Internet.