It would feel like such a kick in the **bleep** if this turned out to be just another feature to the Vita or some new exclusive, but I have about 90% confidence that this will be about the PS4/Orbis; and if it is the next-gen PlayStation, I'll be pretty excited to see what new details it will have.
If it's not the Ps4 then Sony really should come out and say it beforehand so we're not all excited until the conference.
It's the day they make me the head of the Playstation division. I will cede the console war and announce a new ultimate alliance with Microsoft to produce the Playbox: A new generation of peace and tranquility for gamers. Everyone gets to play Uncharted 4 and the latest Halo game on the same console.
So in short the future of Playstation is to have a baby with the X-Box brand.