If there was one screen released by the developper, if the game had a clear release date, I would believe that everything is fine with the WiiU version of Project Cars.

But clearly, it has been put on hold because they have their hands full with the other versions and they think those will sell a lot better. They have to choice, either they wait to finish the work on those versions and then start the development on WiiU, but that means a release date for at least september. Or they hire someone to do it so they can focus on patches and DLCs for PC/PS4/X1, and maybe the game will be released in june.

That's why when I learned that Tantalus was porting something, I thought it was Project Cars. Because I don't think any third party developers right now wants to port something on WiiU. But Slightly Mad promised a WiiU version and now they have to do it.

Now people are getting hyped on tantalus words, of course, because tantalus choosed those words carefully so as to hype you "Unannounced", "Big", "biggest". You should remember that those guys ported only "old" games to wiiU, ME3 was one year old, and Deus EX was what? 2 years old at least. 

You really should lower your expectations, aim low guys. Really really low.

I very much doubt it's FF15 just due to the immense amount of work it would likely take to get the game up and running on Wii U.

What is the meaning of "not hardcore"?

Tomb Raider: Definitive Edition

These days, it has almost no concrete meaning.

Generally means a family or kids oriented game. 

I really wonder if it could be a deal for LEGO games ... Tantalus does the Wii U version of LEGO Avengers 2 and PS4/X1 get LEGO City Undercover ported by Tantalus. 

It wouldn't take any immense amount of work. It's a port.

Lego city has nintendo's money.

Getting this onto Wii U wouldn't be a simple process:

Aside that it would be a Xmas miracle if it comes out this year.