There is still one PS4 announcement to come : Level 5 game

[Aerys]

patronmacabre said:

I think the fact that it didn't happen at the Sony conference means that it isn't Dark Cloud 3, as Dark Cloud is owned by Sony.

It's probably Ni No Kuni 2. They would have announced it if it were Dragon Quest.

Unless Square Enix wants to keep the big announcement for their conference