What's new on the ps4 and is it gonna be compatible with ps3 games?
PS4 will be compatible with all previous systems, but I would not suggest upgrading because there are some leaked photos of the system becoming more complicated to play certain games, different controls.
This may help:http://www.amazon.com/gp/product/B00BGA9WK2/ref=vg_roto_gtway_ps4?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=right-3&pf_rd_r=1542N4CK9MS24CXFKJGT&pf_rd_t=101&pf_rd_p=1498610462&pf_rd_i=507846
PS3 will still be better!...
Actually there are rumors about all systems switching to game codes so once u enter it it can't be switched or sold