Probably no Dead Island 3. If it's a next gen game it will be on PS4 and Xbox 3 and PC, but due to the current-gen power of the Wii U, I think a lot of third party multiplatform games will not bother with the Wii. It would probably be more work to hamstring the game to run on the Wii U with lower assets, etc.
But if the market share is there, maybe. But I think it will be like another Wii vs PS3/360 generation, with the Wii U underpowered by a whole generation all over again.
I still can't believe they limited themselves so much. It's fine for living in a vacuum with 1st party titles and exclusives, but when you have the opportunity to at least beef up your library with multiplatform titles, coming in that far behind is a bit of a problem.
I could be wrong, but we're already seeing it with current gen multiplatform games. I don't see it changing much.
We can't really say if Wii U will get PS4/720 multiplats or not, it's getting Watch Dogs, it might get The Witness, we have no idea if it's getting Theif, or Star Wars 1313.
And the difference between Wii U and PS4/720 isn't like the difference between Wii and PS3/360 (spec wise).