Cool. So long as the system is fully backwards compatible, this is fine by me.
What interests me most is the details of how it will be network integrated, and what model they go with.
I don't think this has to kill the DS either. Hopefully they should continue to release software that pushes the boundaries of the market on DS, that will be playable on the more powerful and network integrated DS2.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.