I think people are just overreacting. They showed Grim Fandango and Disney Infinity 2 for it, both new announcements and Oddworld is coming (let's just hope that it releases with the PS4 version). And we know they are developing Freedom Wars and Gravity Rush 2.
So we have 2 Sony games to be released (more than the PS3 that has only 1 because TLG simply never gets finished, if it won't be released on PS4), 3rd party titles and indie games. Only at E3 they announced the Fandango remake and a 3rd party game with exclusive content (Disney Infinity).
Edit: I forgot Tales From The Borderlands too.