there is no playstation 4
Yes
Yes
No, there will be no cross compatibility.
Yes it is in production for ps4 and possibly xbox one.
You should get the COD: Advanced Warfare for the game system that you prefer to play on. The PS4 is getting better reviews that the Xbox 360 and the Xbox One.
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Better buy the PS3 the PS4 is only a false rumor that is years old with no product in site and you are missing some great PS3 prices on nice systems Might as well get ps3 now because ps4 wont come out for another two to three years. Save your money after you get ps3 so you can enjoy it until ps4.
They do not make a PS4 and may never name a console the PS4
No
They havent told us yet, but it was a big seller for ps3, so i assume they will keep it.
PS4
PS4 definatly