Is minecraft on PlayStation 4?

Sorry man, Mojang has not released the title to Sonay and PSN. It is only on Xbox. Best of luck to you!

Not yet.

The PS4 and Vita versions are now due early in 2014 sometime, it's only the PS3 version that's made it out so far.

No, not yet! It's coming sometime in 2014 along with the Vita version.