Might as well go all in, one company at a time.
Microsoft:
Halo 5: Massive Info dump, unquestioned star of the show.
Rise of the Tomb Raider: Pushed to December to give Halo 5 some breathing room. Gameplay demos.
Fable Legends: Out in early 2016, Info dump with gameplay.
Gears of War Collection: Announcement with a November release date. Done to build hype for...
Gears of War 4: Announcement trailer.
Crackdown: More info, given a vague 2016 date.
Phantom Dust: F2P, releases in September.
Remasters of Metal Wolf Chaos and Shin Megami Tensei Nine. Announced in name only, stated to be worked on for late 2016 as a last ditch attempt to capture the Japanese market. This attempt is paired with...
FF15: More gameplay/cutscene footage. Given a firm Spring 2016 release date.
KH3: Date moved to 2017, will prepare a port of 1.5 HD + 2.5 HD in mid-2016 as a refresher course for MS fans.
3rd Party Montage: Bits and pieces of what's shown at other conferences. Ubisoft has a go with AC and The Division + Rabbids. EA pops up with Battlefront and a tease for ME4 (Saying it premieres first on X1), Bethesda comes in with Fallout 4 and Doom, WB peeks their heads out for a last-ditch Arkham Knight promotion, Konami shows the MGS5 trailer they use for the entire conference.
Indie reel: No real exclusives, just timed releases.
Minecraft Telltale release date + Gameplay for January. Brief confirmation that Minecraft 2 is in development.
CoD: BLOPS 3: Full Monty. Gameplay, DLC announcement, release date, what have you.
New Destiny DLC announced. December release date.
New Controler revision called "Ace". Better bumpers and triggers.
New Console Bundles with Gears and Tomb Raider.
Last announcement is a reveal of multiple projects from Rare underneath the banner: "The Ultimate Projects: Play the games" for maximum nostalgia. Battletoads XBLA in September, Conker's Big Reunion + Project Spark retail release in January, KI Season 3 in 2016 and the big clincher being Banjo-Threeie for release in Fall 2016.