http://n4g.com/ps3/News-52066.aspx

Half way through this podcast hosted by Zdmedia.net they touch base on the Sony & Epic deal. It is stated that Epic and Sony might be working on a PS3 game that deals with the Gears of War universe not necessarily Gears of War 2. The deal that Sony and Epic signed was a multi-part deal, so there could be other things besides the UT3 exclusivity deal.

Here's a link to this podcast:

http://zdmedia.vo.llnwd.net/o1/Podcasts/071307.mp3

EDIT: I just started playing the podcast...its the 1up Yours E3 wrapup show.