Here’s the full list as revealed by Sony.
MotorStorm Pacific Rift
MotorStorm Arctic Edge
SOCOM: Fireteam Bravo 3
After this date, you will still be able to play these games offline.
As of 31 August 2012 you will no longer be able to use the online features of the following game:
THE EYE OF JUDGMENT™ LEGENDS
Sony states that after this date, you will still be able to play the games offline (duh!).
Mind you, it’s not as bad as you think. Come to think of it, is anyone still even playing the games mentioned above?