To be honest, a spring 2013 release would not be bad.
Nintendo could avoid direct competition with Halo 4 and the new PS3 model.
Also It would give more time for developers to finish unannounced projects for Wii U.
They might as well just can the product if they're going to do that and go back to the drawing board.
Really Wii U probably needed to be out in fall 2011 ... Nintendo just let the Wii wither and die the last year, basically they just left their whole console division out to hang.
Basically a wasted year just trying to kick start the 3DS.
The entire transition from DS/Wii to 3DS/Wii U has been poorly executed. They needed to get both the 3DS and Wii U going earlier on.