I won't be getting it personally since I have no DS, but there is a February release planned for a new Capcom vs. SNK card battler game. There's a link to the Japanese site here:

http://game.snkplaymore.co.jp/official/cardfighters-ds/

And a Famitsu site here:

http://www.famitsu.com/game/coming/2006/11/11/104,1163175763,62993,0,0.html

Both have some screens and character pics. Like I said, February release for North America, methinks.

On another note, confirmed Megaman characters in this game include Tron Bonne (Legends), Bass (original), and Dr. Wily (original). Additionally, here all of the series I know are in the game:

Capcom:
-Megaman
-Street Fighter
-Dark Stalkers
-Dino Crisis
-Captain Commando
-Strider Hiryu

SNK:
-King of Fighters
-World Heroes
-Metal Slug
-King of Monsters

How's the gameplay work?

Nah, sorry, I actually honestly don't know a thing about how it plays. XD

Well maybe (by the name) it's a card game. Well it better have a unique battle system.

I'm not sure about the card battle thing. Then again I was not sure about KH Chain of memories but it was a card game I liked very much. You know what game Capcom needs to add for characters? If they added Power Stone characters that would be too awesome. Too bad it comes out a lot after Christmas :(.

It's actually quite likely there will be Power Stone characters; they've made it into previous installments before, I believe.

They better not disgrace Metal Slug in this game.
Also make it addicting, I like addicting games.

Who doesn't? (Don't answer that) I have never played the Metal Slug games though. I can buy one for my cell phone but ,most T-Mobile cell phone games suck.