I'm an exhibitor and just left my booth to wander the floor. Surprised to see the Sony and MS booths with both consoles playable!
XB1 - Killer Instinct, Forza and Ryse playable.
PS4 - Knack, DriveClub and AC4 playable.
I'm gonna hit them in the AM tomorrow before the public's admitted. Lines are too long right now.
More info edited in from my second post:
Ubi has playable Just Dance 2014, SC:Blacklist, AC4 (running on a PC build with PS4 controller - the booth dude was highly specific about this, lol) and Rayman Legends. No playable Watch Dogs.
No Nintendo booth in sight.
Unsure whether the AC4 at the Sony booth is the actual PS4 build
Disney Infinity playable at its own booth
Beyond, GT6 also playable on PS3 at Sony booth
XB1 - Killer Instinct, Forza and Ryse playable.
PS4 - Knack, DriveClub and AC4 playable.
I'm gonna hit them in the AM tomorrow before the public's admitted. Lines are too long right now.
More info edited in from my second post:
Ubi has playable Just Dance 2014, SC:Blacklist, AC4 (running on a PC build with PS4 controller - the booth dude was highly specific about this, lol) and Rayman Legends. No playable Watch Dogs.

No Nintendo booth in sight.

Unsure whether the AC4 at the Sony booth is the actual PS4 build
Disney Infinity playable at its own booth
Beyond, GT6 also playable on PS3 at Sony booth