So primarily for organizational purposes, I would like us all to come together to make a complete list of all of the Wii U titles that we think will be released, but have not been announced.  I'll organize them into three categories: Almost Certainly Coming, Probably Coming, and Possibly Coming.  However, this is not a wish list, nor do I want this to be a list of all of Nintendo's IPs.  Please only make suggesstions for the list if you have reason to believe that they are coming, and please tell us why.

Almost Certainly Coming:

-Pokken Tournament

-Animal Crossing U

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Probably Coming:

-Paper Mario U

-Mario Sports

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Possibly Coming:

-Metroid (30 Year Anniversary)

-Fatal Frame (localization outside of Japan)

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I will update the OP as people post.

Any Mario Sports variant is extremely likely, because those have happened on every platform since the N64. Luigi's Mansion U is a possibility after that game's success on the 3DS and Next Level Games being a Nintendo exclusive developer since January 2014. I also think it's pretty safe to say we'll see another Punch Out game on the Wii U after its success on the Wii and Little Mac's inclusion in Smash Bros.

How much did Punch-Out sell on the Wii?  It's VGC page is broken.

I believe a spinoff Pokemon will be released based on past history. Pokken won't be the only one.

Wii Party / Mario Party is likely to be released again as well. (along with MP10 & Wii Party U)

Metroid is likely for next year considering the 30th anniversary

Besides that, I'm not sure

Come on FFV localization!

I'm not sure what the exact number was, but I know it was over 1.2m before the page removed all of NA's sales. I think it might've sold 1m in NA alone, actually.

Hopefully Metroid. Hopefully an HD remaster for Twilight Princess.

Pokemon:  Besides just an eShop only title?

Metroid: I'm sure that they will do something for the 30th anniversary, but it is possible that that means a game on the 3DS instead of the Wii U.

Hmm... Should we include localizations in this thread or keep it to new games?  I'm asking everybody, not just Ji- I mean, Wizz.  Sigh.

Mario Strikers U?