This is not a thread creating a rumor of an expansion Pak, but a hypothetical situation.

Say the Wii U is stronger than the PS3/360 but not strong enough after 3 years into Generation 8 (a repeat of the Wii situation in 2009-2010)

Kinect revitalized sales of the 360; couldn't an Expansion Pak do the same thing?

This doesn't only involve graphical updates but engine patches and memory expansion with increased tablet function...

So the Wii U Plus?

Well they did it with the N64 right?

It would split the market. There would be Wii U and Wii U Plus games. The N64 did it, but only a few games required it, most just ran in an enhanced mode if it was available. Developers want to reach the largest market possible so they would probably make regular Wii U games and support an expansion as an after thought. Just like the Motion Plus. There are a few like Zelda SS, but most games don't bother with it.

I just don't see a Wii U Plus happening. I think we are going to see Wii U act much like the Wii did once the other next gen system are released. The PS4 and Xbox Next are going to be more powerfull and get the more complexe games. The Wii U will do fine because of Nintendo 1st party games, but 3rd party multiplatform games are going to be scaled down ports, like Modern Warfare 3.

Stupid idea really.

Basically what kain-kusnagi said.