I've posted this before and got shat on all over by Rol and Viper. The Wii was not even considered next gen by its own leader (Hiroshi Yamauchi), so this is no surprise to me.
Gens are rooted in the concept of technical advancements requiring changes to a console, things that could not be done before. That isn't the case for the WiiU, wasn't the case for the Wii.
Console generations are not defined, nor have they ever been, by the changes in spec increases but by the chronological relationship between successor and predecessor flagship consoles. Increases in tech specs have only historically coincided with new generations but were never a requirement not a means to categorize as which generation a console belonged to.
So what does "in earnest" mean to you in this context? I understand it to mean "fa realz", just to keep things simple.
He's simply stating that their main market focus will remain as it is until the next generation becomes the dominant market segment.
The rEVOLution is not being televised