Update: BioWare has responded to the code on their official forums: “The Unreal Engine is cross platform, hence the PS3 code. This was brought up back in Mass Effect 1 days as well. Mass Effect is for the PC and Xbox 360.”
Still, a bit odd considering the code shown isn’t about the Unreal Engine in general, but Mass Effect 2-specific functions — Paragon and Renegade.
Original: New evidence supporting a PlayStation 3 release of Mass Effect 2 has come out today thanks to code located within the PC version of the game.
Apparently, there’s code mentioning both the Xbox 360 and PC versions of the game – as well as code mentioning a PS3 version.