If there are no buttons haptic feedback MUST work flawlessly! They also need to market the shit out of that so people don't think its just a touch screen, most people don't know what haptic feedback is.
The lack of grips could just be down to it being a prototype but even then its makes hardly any sense that they wouldn't add it for the benefit of the developers. Anyway it really does beg the question of whether this is also the handheld. A grip attachment could come with it for console use.
Hopefully they reveal the system before E3







