those with US ps+
free additional games for your account
nfs mw for vita
mirror edge for ps3
pvz garden warfare for ps4
courtesy of EA, you have to add them to your account by this weekend (while playstation experience is ongoing)
for more details see @Playstation on twitter
btw, for those who dont know yet. if you want to add ps+ games to your account for systems that you currently do not own (e.g you have a ps3 only at the moment, buying a ps4 in the near future) . access the store from a PC and you will be able to add the ps4 ps+ games to your account first, and download them next time once you get your ps4
link to web store:
http://store.sonyentertainmentnetwork.com/