Will Sony have a replacement for the holiday season now that Uncharted and Ratchet are delayed?
They won't have a major first party release, but there will be the Uncharted Collection and plenty of smaller games like Rime, Tearaway Unfolded and No Man's Sky. I think pushing third party games like Battlefront and MGS5 will be Sony's focus this winter.
What will the big show closers be?
MS - maybe a Gears 4 teaser.
Ubisoft - some bullshot nonsense
EA - probably a Mass Effect 4 teaser or gameplay trailer
Nintendo - new 2D Metroid for the 3DS
Sony - Horizon
Will Microsoft have another 3rd Party AAA moneyhat?
I don't think so. I think they're going to focus on first party stuff this E3, with more mentions of RotTR being treated as a first party game, hence its presence.
What will Ubisoft's bullshit fake demo be this year?
Probably a new Tom Clancy game.
Will TLG show up this year?
Nope. It's dead, Jim.
Anything cool at the 3rd party shows?
Mass Effect 4 and Mirror's Edge at EA's conference. Hopefully we'll see some Need for Speed stuff as well.
Nintendo?
What about them? They'll probably have a pretty good show, with Starfox, SMT x Fire Emblem, Xenoblade, etc. No Zelda though - too early to show
.
Other random nonsense.
Digital games will be the highlight this year.