Nintendo financials release today and it shows WiiU at 5.86m shipped (VGC shows around 5.3m sold end of 2013, so 500k~ on shelves.)
Nintendo have forecast 390k for Q1, exactly same as last year. If they hit this, it would put lifetime shipments end of march at 6.25m. The following Q they shipped 160k.
Of course there is Mario kart to consider, but we're going into February without a release date ... surely it's getting less and less likely it'll release before E3? Which is early June.
Sales won't get an uptick until MK hits but if that's not before E3 then sales will be 5.75m~ plus what they sell in April and May, judging by their shipments for that period last year it won't be high.
Also interesting to note that WiiU is down YOY in japan so far this year 33k. If it's down in Europe/US too will they hit that 390k shipped forecast?