My predictions:
Microsoft:
- Xbox One Plus (?) console reveal
- Oculus Rift support for Xbox One Plus announced + games
- Hololens stuff
- Gears of War 4
- Cuphead
- Sea of Thieves
- Halo WARS 2
- Scalebound
- Recore
- Minecraft IP related announcement
- Forza Horizon 3 announced
- Alan Wake 2 anno
- Third Party segment: Battlefield 5, Mass Effect Andromeda, Resident Evil 7, Ghost Recon: Wildlands, etc
Sony:
- PS4K console reveal
- PSVR full blowout + games
- Horizon Zero Dawn
- The Last Guardian
- Detroit
- Persona 5
- Final Fantasy VII Remake
- Nier Automata
- Gran Turismo Sports
- Ni no Kuni 2
- Kingdom Hearts 2.8
- Deep Down re-introduction
- Uncharted 4 Single Player DLC
- BEND's new IP announced
- inFAMOUS 3 announced
- Demons Souls Remastered (or maybe Bloodborne 2 already?) announced
- God of War IV announced
- Crash PS4 announced
- Third Party segment: Destiny 2, new Call of Duty, Watch Dogs 2, Red Dead Redemption 2, Rockeasteady's new game, Final Fantasy XV, etc
Nintendo:
- NX console reveal
- Zelda U/NX re-introduction
- New 2D Mario announced for NX
- Metroid Prime 4 announced for NX
- Pikmin 4 announcedd for NX
- Super Smash Bros U and Xenoblade Chronicles X coming to NX
- Super Mario Galaxy 1 & 2 HD for NX
- Animal Crossing NX announced
- F-Zero NX announced
- Third Party segment: Ubisoft, Activision, Square Enix and others on board with support for NX (Watch Dogs 2, Skylanders, Dragon Quest XI, etc)
All in all I think Sony will try hard to top last year's conference and actually succeds. They have a great catalogue of already announced games to show and to announce and the big "Crash" megaton (hopefully). But Microsoft and Nintendo will not be behind, the big 3 all should have amazing stuff to show this year.
Microsoft:
- Xbox One Plus (?) console reveal
- Oculus Rift support for Xbox One Plus announced + games
- Hololens stuff
- Gears of War 4
- Cuphead
- Sea of Thieves
- Halo WARS 2
- Scalebound
- Recore
- Minecraft IP related announcement
- Forza Horizon 3 announced
- Alan Wake 2 anno
- Third Party segment: Battlefield 5, Mass Effect Andromeda, Resident Evil 7, Ghost Recon: Wildlands, etc
Sony:
- PS4K console reveal
- PSVR full blowout + games
- Horizon Zero Dawn
- The Last Guardian
- Detroit
- Persona 5
- Final Fantasy VII Remake
- Nier Automata
- Gran Turismo Sports
- Ni no Kuni 2
- Kingdom Hearts 2.8
- Deep Down re-introduction
- Uncharted 4 Single Player DLC
- BEND's new IP announced
- inFAMOUS 3 announced
- Demons Souls Remastered (or maybe Bloodborne 2 already?) announced
- God of War IV announced
- Crash PS4 announced
- Third Party segment: Destiny 2, new Call of Duty, Watch Dogs 2, Red Dead Redemption 2, Rockeasteady's new game, Final Fantasy XV, etc
Nintendo:
- NX console reveal
- Zelda U/NX re-introduction
- New 2D Mario announced for NX
- Metroid Prime 4 announced for NX
- Pikmin 4 announcedd for NX
- Super Smash Bros U and Xenoblade Chronicles X coming to NX
- Super Mario Galaxy 1 & 2 HD for NX
- Animal Crossing NX announced
- F-Zero NX announced
- Third Party segment: Ubisoft, Activision, Square Enix and others on board with support for NX (Watch Dogs 2, Skylanders, Dragon Quest XI, etc)
All in all I think Sony will try hard to top last year's conference and actually succeds. They have a great catalogue of already announced games to show and to announce and the big "Crash" megaton (hopefully). But Microsoft and Nintendo will not be behind, the big 3 all should have amazing stuff to show this year.