Demo now up on the Japanese marketplace. What language it downloads in will depend on your console, so if you have an English one the whole demo will be in English.
7mins of the English demo in HD:
http://www.gamersyde.com/news_6672_en.html
Nicovideo links for the Japanese demo:
http://www.nicovideo.jp/watch/sm3713081
http://www.nicovideo.jp/watch/sm3712891