According to the Playstation Blog there’s a hefty update coming, but it’s not here yet, at the time I’m writing this anyway. The big thing is probably the Qore Digital Magazine, which is Sony’s way of charging users for “exclusive” content such as demos, betas and more. There will also be a couple of downloadable games, which are Wolf of the Battlefield: Commando 3 and Novastrike for $9.99 each.
There there is the add-on game content for Guitar Hero III consisting of the Motorhead track pack and the free God of War song. On top of that you have the Disturbed and Jimmy Buffett tracks for Rock Band along with a bunch of discounted songs.
There will be three demos this week; Civilization Revolution, Battlefield: Bad Company and Nascar 09. There are also a ton of game videos, a PS3 Theme, and some game music.