Stuff that might be there
Listed from what I think is most likely to what I think is least likely.
Ratchet & Clank Redux/Re-imagined/Reboot
As many of you may know, everyones favourite hero (my favourite anyway...) is set to release his first game on the PS4 next year. It has been mentioned, but it really hasn't been talked about a lot. I fully expect them to showcase this title at the event (I might be slightly biased towards it though).
Uncharted Collection
Photo courtesy of my photoshop skills. IMO this is a no-brainer for Sony. This should be announced, but I'm not sure.
Media Molecule's new IP
It is well known that Media Molecule has been working on a new IP for quite a while. Will this be shown at PS Experience, or are they only listed as one of the devs that will attend because of Tearaway: Unfolded?
Project Horizon
As you saw, Guerilla Games was one of the developers attending the event. Could it be that they're gonna showcase their recently leaked game, codenamed "Horizon"? The game is apparently an open-world TPS RPG with robo-dinos.
Vita
There recently surfaced rumors of the Vita being present at the event. As I wrote, this list is ranked from most to least likely, which is why this is at the bottom.
That's a lot of cool stuff right? And there's even more which I haven't mentioned (I can't list every game that'll be there 
)
