What's a Wii?
I don't think it's deliberately to ignore Wii. It's just there's no news to talk about Wii. Wii sales are down, but should go up over the holiday season but probably not close to last year. Wii has just gotten old-hat. Which is nothing to be ashamed of, because Wii is following a typical console cycle (5 years) whereas MS & Sony are doing everything they can to extend the console cycle we're still in.
Which is what the news is about. Will Kinect / Move succeed? How much? Which will do better? How much of a life boost can it give these systems? Etc.
Wii has already won. If 360 or PS3 outsells Wii over the holidays, that will be news. If Wii dominates, that's not news, that's business as usual.
Nor do I think Nintendo cares. If they wanted to, they could release 3DS this year and the hype around that would blow Sony's and MS 4 year late to the party motion control offerings right out the window. Wii's on the decline, so is DS, which is probably exactly as Nintendo expected it to be and I'm sure we'll see the Wii successor by late 11 or early 12 depending on how well Wii holds up in the meantime.