With the lackluster reveal of Xbox One, MS has almost showed all their Aces. It is true that they have some 15 upcoming exclusives including 8 new IP's, but who knows how many of those are only sequels and Kinnect games.
However, Sony still have a lot to show in upcoming E3 including:
1- New Hardware Console
2- The new camera functionality.
3- Touch pad usage within games and possible show off for a game which uses the touchpad.
4- 1st party developers games for Ps4 such as Naughty Dogs, Santa Monica, and Media Molecule., etc....
In addition, Sony will be talking about upcoming PS3 games such as Beyond, Last of Us, GT6, and Puppeteer. PS Vita will be also in the mix of E3 presentations.
On the other hand, i am not sure what Microsoft has left to reveal. I cant see MS topping Sony presentation in any way possible way.
