Portal 2 will only arrive on PC ("there's a bunch of dependencies that require the Windows platform"), Valve's Chet Faliszek confirmed during a recent interview that the fruits of those tools will make their way to "all platforms." Faliszek specifically noted that "the content that comes out is agnostic, and so we will be seeing that on all platforms." That said, the content may not be distributed the same way across all platforms. "Depending on the platform you're on, I should say, will depend on how we're delivering it," Faliszek said, also confirming that the PS3 version would get user-created content via Steam for PS3.
In other Portal 2 news, speaking with VideoGamer, Faliszek revealed that each of the game's two campaign modes (single-player and co-op) will have their own individual surprise rewards for completion. "Both sets of credits [will feature something special], because we've got two credits," he explained. "So we had to do something twice as amazing." Presumably, Mr. Coulton has been hard at work on a hot new mix (mixes?) for GLaDOS. This time, we're holding out hope for a big dance number.