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Fable 

Perfect Dark 3rd person? 

Forza horizon in Japan 

Bigger MP for Halo 6 

A mech game, possibly Mechassualt 

AoE 

2 Halos being developed [source]

Something Banjo related, 20th year anniversary is this year [Source]

And this guy has a pretty good track record

https://www.reddit.com/r/xboxone/comments/4luugg/e3_teaser_trailer_coming_online_later_today/

Anyways, thoughts? Does this make you excited for what xbox possibly has in the works?

There's 2 pretty nice surprises imo, and as always take this with some grains of salt

If Forza Horizon 4 takes place in Japan they better try their hardest to get Toyota and Lexus back in the game.

Lame, seems it’s mostly existing IPs.

I don't put much stock in rumors but preexisting ip aren't necessarily a bad thing. New IP aren't automatically good.

Expect Forza Horizon 4 to launch this year, I think Perfect Dark might make it out this year and expect a Halo 6 beta with Crackdown 3 so. Also expect a Halo 6 announcement at E3. Overall I'm pretty happy with the leak.

Weren't there some rumors a while ago that Rare was working on a 2nd game alongside Sea of Thieves? Maybe the Perfect Dark thing would be from them.

Age of Empires being developed isn't a leak. Microsoft already announced it, not sure if it's coming to Xbox, but I assume it will. (If it's only PC and not on Steam, I'll pass.)

Forza and Halo isn't news either. It's expected. - It's like someone trying to convince someone that water is wet.

Rares second game is a new IP. The Perfect Dark is being worked on by the Coalition and another developer according the the leak.

Ah ok. Sounds like good news for those who want more new IP's from Microsoft or for some returning ones, 2 new IP's from Rare and that the Coalition can do something other than Gears of War and are working on Perfect Dark, that is if these rumors/leaks turn our true. 

Some new (and good) IPs would be very appreciated, but a new Fable, new Perfect Dark (yes please) and a new MechAssault should be enough to make many Xbox fans happy. Also, 2 Halos in development? Maybe the other one is the long-awaited Halo 3 Anniversary Edition. A FH game set in Japan is pretty cool too. Overall it's a pretty exciting rumour, hope it's true.