tag. ill do it later.

I needed a bit more space than the template allowed, but here goes:

Nintendo:

1)Animal Crossing announced for Wii U, holiday 2015 release date.

2)New mainline 3D Mario for Wii U, 2016 release date.

3)F-Zero or Wave Race announced for Wii U, 2016 release date.

4)New Metroid announced Wii U, 2016 release date.

5)Zelda Wii U gets a gameplay trailer with story focus & spring 2016 release date.

Sony:

1)GT7 gameplay trailer, details and a Holiday 2015 release date.

2)Ratchet & Clank stage demo shown, fall 2015 release date.

3)Guerrilla's new IP officially announced, with gameplay and gets a Holiday 2015 release date.

4)The Last Guardian gets new real-time PS4 gameplay, Holiday 2015 release date.

5)God of War gameplay teaser for PS4 shown, with a solid March 2016 release date.

Microsoft:

1)New Banjo game announced, with a CG Teaser (Rare).

2)Crackdown gets gameplay, 2016 release date.

3)New Battle Toads game announced (not made by Rare).

4)Gears 4 trailer shown, in-engine footage, 2016 release date given.

5)Quantum Break gets new gameplay and a solid early 2016 release date.

3rd Party stuff:

1)Final Fantasy XV new gameplay, Holiday 2015 release date given (like December). 2)Kingdom Hearts gets new gameplay, 2016 release date given.

3)Fallout 4 announced, with in-engine trailer. 4)Mirrors Edge 2 gameplay shown. 5)New Need for Speed announced, 2016 release date.

6)Level 5's new PS4 exclusive is a new Dark Chronicle game, coming 2016.

7)Platinum Games has Scalebound footage for XB1, also coming to PC, Windows or Linux/Vulkan.

8)Mass Effect 4 gameplay shown, 2016 release date.

9)New Titan Fall unveiled, has a proper campaign, is a multiplat for PS4, XB1 and PC.

10)Rockstar unveils Agent at Sony's conference, with gameplay and a 2016 release date.

Edit: I've decided to add some stuff to mine, but if it has to be 5 options for each line then I'll just keep the stuff above.

If we can have additional stuff then I think the stuff below will happen.

Nintendo addition: They'll announce a new IP for Wii U.

Sony addition:  will announce that Deep Down is no longer a free to play title, but rather one of their Fall 2015 releases, now disc based, as well as on PS Store.

Sony's E3 will largely be about games coming out this year in the holiday season, because they have a lot to confirm for this year. They'll use Gamescom, TGS and PSX to announce most of their 2016 exclusives.

MS addition: Rare has a new IP to announce.

This isn't everything of note that I think will happen throughout the conference, seems highly likely that The Division will get new gameplay, maybe Rocksteady will announce a remaster of their Batman games for current gen will be announced, maybe Mass Effect gets a remaster collection.

Obviously Rise of the Tomb Raider, Forza 6 and maybe Fable Legends will get new footage and release dates. Nintendo has confirmed Starfox, hopefully they show a load of footage for that and a release date will get announced, unless it's been delayed, but I doubt it.

I think this E3 will be one of the greatest ever and even with all of this I think there could be a load of surprises that I and others really can't even hope to guess at.

Tagged

And: Is there an advantage to making bold prediction rather than obvious ones?

example "halo 5 will be shown"(obvious) versus "chrono trigger 3: Chrono Brake will be announced as a timed sony exclusive" (bold)

No, but it's good mixing predictable predictions with crazy ones. It's funnier that way.

This sounds interesting, I'll be tagging for now

I think I'll do exclusively crazy predictions then.  

also, imagine how cool it would be if I got one of them right (by pure chance)

done :)

Updated