http://www.computerandvideogames.com/news/news_story.php(que)id=120272
The Xbox 360 will have twenty titles available at launch at its debut in Japan - that's according to Munetatsu Matsui, editor-in-chief of the highly respected Famitsu Xbox mag, speaking in a round table discussion in the current issue.
Elsewhere in the piece Matsui-san also hinted that the Xbox 360 had some secret functions which were currently unknown at this time and would be revealed one year into market by a Live update.