My source http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&cad=rja&sqi=2&ved=0CDAQqQIwAA&url=http%3A%2F%2Fwww.thesixthaxis.com%2F2013%2F11%2F06%2Fdead-rising-3-runs-at-720p-30fps%2Fcomment-page-2%2F&ei=TMN7UtHGKOS57Ab4j4FI&usg=AFQjCNHC5g4hHmep3Mws1bojvqKEO2o88g&bvm=bv.56146854,d.d2k
Recently it has been confirmed another Xbox one launch title is not running at 1080p 60fps this time it is dead rising 3 in a interview with euro gamer executive producer on the game Josh Bridge confirmed Dead rising 3 runs on 720 and is locked at 30fps the reason for this is the vast number of zombies at screen as once
On the brighter side of things
Ryse: Son of Rome has been confirmed to run at 900p/30fps
Forza Motorsport 5 has been confirmed to run at 1080p/60fps although to get 1080 60fps 6 tracks were removed and around 200 cars.