PS4, you will be able to catch up with PS3 games via Gaikai on PS4 anyway

I would buy current generation stuff.

Dark Souls 2 > next gen

Out of all the Playstation 4 videos showing off the hardware, none of them show where the game disc goes. I think it will be like the newest Playstation 3 slim where you slide or open something to place the disc in. Back to topic, the Playstation 3 has some mean games that's coming. Grand Theft Auto 5 and Rayman: Legends among many others will come to the console. However you can still get those games but it should not stop you for buying a PS4. It comes down to how bad you want it.

You should stick with current gen, next gen is always great but not if it doesn't have the games to back it up and for now these current gent games will receive some really amazing games, that's what I am doing, I won't upgrade until some point next year.

I'm just getting a ps4 with killzone and all the rest ps3.
My second game (at this point) will probably be infamous and knack after a pricedrop.

So I think you're better off with current gen for now.

The systems that are currently out run circles around the launch lineups of these upcoming consoles. Things don't look too good for them until mid next year or more likely fall 2014 as we all know some games are going to get delayed.

dont waste your money on ghost or bf4 for current gen. 

I'd go with PS4