So yeah since Jesse Mccartney posted a picture and vid of him in the studio,I need to buy me some Playstion 3.However, Playstation 4 is on it's way.Can you play PS3 games on a PS4?and what if I buy a ps3 and then the games go to a ps4?seriously, is there any information on this?

The PS4 will not be backwards compatible. I would recommend getting a PS3, as we won't see any KH games on the PS4 for at least two years. 

It can play ps3 games via cloud gaming only.

Get the ps3

Get the PS3. Simple as, lol.

If you can wait that long.

well, like keys said the ps4 will stream ps1, ps2 and ps3 games. so its going to be a tough decision. so really i dont know. all i can say is: Do what you want.

There's many other good games for the PS3, whereas we'll probably have to wait forever to have enough decent games for the PS4 for it to be worth buying.

There's many other good games for the PS3, whereas we'll probably have to wait forever to have enough decent games for the PS4 for it to be worth buying.

I dunno, Infamous Second Son looks pretty good. But i would still recommend getting a PS3 and KH before PS4.

Might be totally irrelevant for your question but I just wanted to say that I remember when I had a choice between choosing PS3 or XBOX 360 and it was really tough choice but at the end Kingdom Hearts came to my mind and I thought since Kingdom Hearts was only on PS2, there has to be a next Kingdom Hearts game on PS3 and not XBOX so I finally bought PS3 and I'm really happy to have it because it has really epic games on it and now with Kingdom Hearts finally coming for it, it looks like my journey with PS3 is coming to an end after I have got my hands on Kingdom Hearts HD.

 

Sorry it's just my little story but I would just say that don't miss the Kingdom Hearts HD on PS3 so buy PS3 and not PS4 just yet as it won't play PS3 games via discs. Kingdom Hearts 3 might come to PS4 definitely but it would be in 2015 or 2016 so don't worry about that yet.