[quote name='MrNinjaSquirrel']Knack, and the witness (unless that went multiplatform). Also whatever Media Molecule, Naughty Dog, and Quantum Dream are working on. Is say numbers wise they are about equal, but I wouldn't be surprised if half the new Xbox exclusives are more casual kinect games. PS4 will of course have them as well, but I doubt in nearly the same volume.[/QUOTE]
The Witness is third-party. Jonathan Blow's team is self-publishing that for PS4 and that's the only version they're making at the moment.
For PS4, Sony has only shown Killzone: Shadow Fall, Drive Club, and Knack so far from their studios, though I wouldn't worry about their output. The first year of the PS3 has 14 retail games alone and PSN games pushes that over 15, so they can match that output with even more studios under their care now.
It'll be nice to see what Microsoft's studios can do with a clean slate, as it was disappointing to see their output go from games like Viva Pinata, Banjo & Kazooie Nuts & Bolts, Crackdown, Kameo, and other unique and interesting games in the first few years to just more Halo, Gears, Forza, and Fable most recently.