Looks like its called the Nintendo Channel. Looks like it has previews and info of upcomming titles from Nintendo as well as third party development. Shows that there is a version of Dr. Mario comming for WiiWare that includes Mii's. A game called Lost Winds that looks pretty interesting. and several others. And they give WiiWare a launch date for the US. The 12th. It also includes the DS download service to let you download demos to your DS.
I wanna check out the Ninja Gaiden DS just to see what it's like.
I like the idea of this channel. It takes the demos and news sections of Live and gives them more visibility. I hope it's as good as it sounds, I won't be able to look at it 'til tonight