The UK PlayStation Blog has updated a list of PS3 and PS Vita games that will no longer be supported online.
Online servers don’t remain on forever so some games will lose multiplayer features within a few years. All of the PS3/PS Vita games that Sony has listed will still be available for you to play offline.
As of 15 September 2013 you will no longer be able to use the online features of the following game:
PlayStation Vita
-MLB 12 The Show
After this date, you will still be able to play this game offline.
As of 2 August 2013 you will no longer be able to use the online features of the following games:
PlayStation 3
-Buzz!: Quiz-TV
-Buzz!: Quiz-World
-Buzz!: Brain of
-Buzz!: The Ultimate Music Quiz
After this date, you will still be able to play these games offline.
As of 18 June 2013 you will no longer be able to use the online features of the following games:
PlayStation 3
-White Knight Chronicles
-White Knight Chronicles II