It was inevitable, as Capcom has announced Resident Evil 5: Gold Edition will be coming to both PS3 and 360 in a retail compilation on March 9 for $50.
The PS3 has a slight benefit over the 360, as everything is on a single disc. The 360 version has the extra content on a DVD with a voucher code.
The missions will be released separately before the Gold Edition hits. The first one, "Lost in Nightmares," will be coming February 17/18 (one hell of a birthday present, albeit a few days early for myself) with a costume pack, and the second, unnamed chapter and another costume pack will be March 3/4 for the 360/PS3, respectively.
As per my prediction, I was 3 weeks off. Okay, maybe that one sucked, but this announcement pegs it on the same day as my prediction for God of War III.
Oh, and that's the same day as Final Fantasy XIII. Good luck with that, Capcom.