I can see that. I'm 100% with you on the probability of this rumor being true.

I've tried to contact Retro Studios, but there is no e-mail. Just an address and a phone number for Austin, Texas.

Even their website is drop dead simple using low res images... Those guys definitely don't want to get e-mails from their fanbase.

I talked to them about their web site many years ago (redesiging it, hosting it, keeping it updated and active).   It's apparently just not that important to them.

That would be wicked if those rumors were set in stone!

I have great expectations for Retro Studios on what they will create on WiiU

I'm only partially happy for this rumor. I hope retro will have the time to develop their own games, since they have excellent game and level design skills.

I wouldn't worry about that. Eventhough the engineers might be working on an engine for WiiU (just like every company does at the beginning of a new gen) the rest of the studio must be working on something.

And the best way to try the new engine is making a game!

Even Epic developed Gears of War alongside UE3.