The Division. The only game which really stood out for me at E3, in terms of graphics. Killzone SF and inFAMOUS are decent as launch/window titles but aren't THAT impressive to me.. and other games - MGSV, BF4, FFXV, Witcher 2 (as good as they looked) are mostly just an improvement on last gen and roughly on par with higher end PC graphics - not nearly enough to really "wow" me. A lot of these upcoming games are going to be cross gen titles with current gen specs in mind (assets) so it'll be while before devs can show something truly next gen.
If I had to put my money on this though, It'd probably be David Cage's next game on PS4 - assuming it matches the fidelity shown in the 'Dark Sorcerer' demo.







