(adsbygoogle = window.adsbygoogle || []).push({}); Will PS4 players be able to play cod with ps3 players?

Nope
Closed platforms as a result closed network.

Most likely not. Even though both use the PSN, both games would use different servers.

Just wondering because you can cross console play with ps3/ps vita

Ps3 gamers are only going to be allowed to play ps3 games because the game has a Region ID, for PS4 its going to have a totally different ID because its a "Next-Gen" console... Example PS2 Game Region I SLUS 20035, Ps3 Region I BLUS30838, and a PS4 will probably be PLUS 45209 and thats why on PS3 you got US/CANADA gamers on one server...and German and others on another... thats going to be the same against PS3 and PS4... said to say :/

If my friends get the PS4 with Ghost... I wont be able to have a great time on the ps3 when ghosts come out :/

Hey RTS, I've heard that your progress through multiplayer carries over though. How would that work? I heard TmarTn talk about it in one of his videos and he's usually pretty well informed.

No differently no.
It would be good but no.

Answered. Closed.