The Sakura Taisen series gets a DS instalment next year. The battles now take place mostly in dungeons, which you navigate with the help of the top screen. Stylistically, the main difference from the series proper is that the characters are in SD format.
http://game.sakura-taisen.com/ds/
http://www.famitsu.com/game/coming/2007 ... 6,0,0.html
http://www.gpara.com/comingsoon/sakura_dd/071017/
And a trailer (14MB):
http://insomnia.ac/archive/games/ds/s/s ... railer.mov