IGN have updated a number of their U.S. release dates for PS3 games. Bringing this to your attention should be tainted with a warning: they are not official. However, IGN will only change their release dates from TBA to an actual date if they have recieved new information. They also do so on a weekly basis and this week has had some noticable revisions.
Calling All Cars, Gauntlet 2 and Super Rub'a'Dub will be hitting the PSN store on the 3rd May
EyeCreate is listed as July 26th - this begs the question that the Playstation Eye will also be released on this date.
Heavenly Sword is now listed as August 7th, changed from TBA last week.
Metal Gear Solid 4 and Uncharted: Drake's Fortune have now been listed as Novemeber 2007, with Eight Days and Eyedentify joining them in Decemeber.
All unconfirmed, but are a reliable recent guidline to what to expect throughout the year.