What I pretty much expect (yeah yeah I know, don't expect anything):
-Announcement trailer/teaser
-Title
-General summary of at least initial information
What I want and think we might be able to get:
-Gameplay trailer
-Protagonist info
-Start of articles with substantial (but still 'teasing') details
2012 gave us nothing except that another game was gonna happen (I learned more than that but not much).
2013 gave us concept art with nearly no context.
2014 gave us general and vague footage and blips of info that still had nearly no context. This was a bit surprising but still seen as possible so I rolled with it.
But 2015? LOL yes we HAVE to be getting stuff now. The hype WILL happen this year and there's almost NO way that it won't happen at E3. This doesn't mean a giant reveal of tons of things (ideally it would, but whatever), but it does mean we'll at least know the friggin TITLE and SETTING and BASIC GAMEPLAY.