So my guess is we'll get gameplay demos of a ton of stuff, things only announced last year, such as Sunset Overdrive, (more) Quantum Break, Rime, The Witness (if that's E3 material) and a lot more. I wouldn't expect anything of Battlefront, but maybe Mirror's Edge 2. Isn't there a new Mass Effect rumoured? Speaking of rumours, we might get something on Dishonoured II, and Resi Evil 7 may be an Xbox One exclusive. Also, E3 2015: Vince Zampella onstage for Sony announcing Titanfall 2 launches on PS4 at the same time as the One.