I don't think one of them is FFXV. Wasn't there some rumor about a new Deus Ex? And what about a Tomb Raider sequel?
As for Tomb Raider... isn't it a bit soon? I mean, with the reboot having launched last year and the remastered version this January. Of course, they could show a little teaser or something. Or even another game, they have a lot of IPs in their Western teams (or maybe a new one, although I doubt it).
So, yeah, I think those are basically going to be Eidos games (BTW, Hitman has been confirmed to no be there, right?), since it would be pretty silly not announcing that XV is gonna be there, that would make for a cheap surprise. But well, it's S-E.