The website concept.org has an interview with Matt Rhodes of Bioware about his works on the concept artworks of Mass Effect. Along with the interview there also was a few excellent looking artworks of the game. E3 can't come soon enough!
Its really no different to any other third party/first party partnership that screws over the other consoles in some way or another. (3 Hours ago)
@droezelke: of course they agree'd to it. There was likely money involved which again makes business sense for epic to agree to those terms if it means being on the console with the most users. (3 Hours ago)