It's official: it's a translation of the second game!
Some screenshots and art:
http://www.modojo.com/games/ds/phoen...for_all/media/
Seriously, everyone who hasn't done so should play the first game, it rocks!
Update:
You can see a trailer for the game at:
http://ww2.capcom.com/e3_2006/main.html
Select the name of the game from the list on the left, and you will see some screenshots and a trailer.