Over in Japan, they've put something called Phantasy Star ø Mini up in the DSiWare shop. I'm not entirely sure, but I think it's like a demo or shortened version of the game. Here's the official site and Nintendo's site looking at it:
http://phantasystar.sega.jp/pszero/#/in ... pszeromini
http://www.nintendo.co.jp/ds/dsiware/kpsj/index.html
Maybe we'll also see Mini released over here.