Rumor has it Gauntlet DS is cancelled.
We have multiple DSes in the house, but other than a little bit of Meteos-flinging, the only multiplayer action they ever see is endless games of Mario Kart. Most games I own aren't multiplayer. Meteos is, and even has download play, but while it's fun it's not fun enough to buy two copies just to get the MP action going, and it's not nearly as varied fun as Mario Kart. Elite Beat Agents has an MP mode, but I am not kidding when I say that our skill levels are SO widely disparate that it's not worth playing.
Anyway, we had hopes for being able to power through dungeons together, but sounds like that's not happening. Alas.