Reports of Borderlands 2 showing up in Steam game libraries of Linux gamers have started coming in by Phoronix readers, although the title isn't yet playable but has been confirmed by Aspyr Media as doing the port. For those that haven't fired up Steam on Linux today yet, there's the SteamDB information. Hopefully the Linux port will become playable in the near future. This news comes after back in April they were just considering a Borderlands 2 Linux port.
The story to Borderlands 2 is described as:
Borderlands 2 follows the story of four new Vault Hunters as they fight to free Pandora from the clutches of Handsome Jack, the brilliant, charismatic, and utterly despicable CEO of the Hyperion Corporation.
Players will fight across the whole of Pandora to stop Jack from awakening an ancient alien evil known only as "the Warrior." Their quest will bring them into contact with some familiar faces from the old game – most notably, the original four Vault Hunters: Roland, Lilith, Brick and Mordecai. They, along with some brand new characters, will help players defeat Jack, destroy the Warrior, and save Pandora.
Borderlands 2 currently retails for $20 on Steam.