Probably not shocking if you've been paying attention over the last year or so, but here's the confirmation: http://www.gamespot.com/news/6156938.html?part=rss&tag=gs_news&subj=6156938 Weird timing, but I'm glad this has finally been put to rest. Wonder if we'll get confirmation for 360 versions of UT2K7 and Mercenaries 2 soon as well.
The only thing I was a little surprised about was the simultaneous release. The way it was messed up, I thought maybe Sony had found a way to secure a timed exclusive at least. Good thing that's not the case.