Everyone who owns the game on Steam Win/Mac, and happened to be in the Steam Linux public beta, now owns the game on Linux too. Launch Steam your client and enjoy Steel Storm among other games on Steam Linux, and there is no DRM for this game on Steam Linux.
Some you may have missed, popular articles from the last month:
No key here. Bummer...
The closed beta isn't live yet ;)
Game developers packaging their apps for the Linux Steam client have access to an internal version from what I understand (that's where talk of TF2 running so nicely under Linux is coming from :3 ), but that's the limit of its availability outside of Valve so far as I'm aware.
Also, weren't you always shipping Linux binaries in the Windows version of Steelstorm on Steam?
I imagine it's so that it will be available when the beta does go live (it makes sense to organise these things beforehand) ^_^
Does this translate to 'your steam only offers binaries for your platform' or 'SS:BR is only available via Steam'? The latter would be :(
Let's say you have Steam account and you are on Windows. Once you purchase a game, e.g. SS:BR, that has Mac OSX and Linux port, you can install it on any of those OS. So let's say you have dual boot with Ubuntu. That means once you install Steam on Ubuntu, SS:BR will be automatically downloaded and you can also play it on Linux. Which translates into "on Windows, you play SS:BR for Windows, on Linux you play SS:BR for Linux; no more mixing up binaries for different OS".
Where have I ever said "SS:BR is Steam exclusive now" ? o_O