I've got a feeling Sony's gonna do some type of discount for getting the PS3 and Vita version aka bundle pack so I'm waiting for that deal. I would really love a collector's edition though, imagine the possibilities!
I hope so! It would kind of be like how Portal 2 came with a free digital PC copy because you could cross-play with computer players so maybe PS3 owners get a free digital copy as well? I don't expect free but maybe bundled in or put in the collector's edition.