I don't see that the same way. That's an investor's briefing and Iwata has to explain why there's no Wii2 announced NOW despite falling Wii sales.
What he's not saying is the expected hit from Kinect/Move which of course no one yet knows but you can bet they'll be watching closely. They've known about it for at least 1yr, 2 if they follow rumours. So you know they have contingency plans.
If Wii is still selling well in the first 1/4 of 2011 (comparible to this year) then they'll likely wait, if it's down significantly and Move and Kinect are showing traction beyond initial 'oh wow cool' / holiday sales, then I'd expect they'd have Wii2 ready for holidays 2011. Mind you, they had 3DS ready for holiday 2010 and we all know what happened there so....
