launching in 2015 means game development for that console started in 2013 or earlier
so you are asking us
whether microsoft was already developing games for a new console before they had even launched their next console xbox 360? (not to mention that they must have been developing two consoles at the same time which is ridiculous of course)

this is some sort of joke or you just dont think for a second about what you post

Thank you

2017 at the earliest, and that's pushing it for all three.

Nonsense, they'll join forces and release the ultimate super console to take down Sony for good! The Microsoft-Nintendo Xbox Mii Two!

Seriously though, perhaps new Steam consoles, but no, nothing from Nintendo or Microsoft.

I applaud you OP, this thread made me LOL

retron 6

You're welcome! Now you can continue your day without having to worry!

I see all three companies supporting their console for atleast five years..

Yeah... The best thing to deal with a poor accepted console is to quit supporting it real fast. That will totally go down fine with people. Might as well hand Sony the keys. Let's ignore what Sega did to themselves.

New 3DS, anything else is unlikely