Since docomo seems to have this phone out/almost out, I hope this means there are more Japanese developers for android now and we see a nicovideo or mixi app soon! (If they exist, I don't see them on the US Android Market.)
Are there any good sites in Japan focused on Android news there? At least there's this mixi community...
(When I worked on BeOS software, I also helped bridge the gap between Japanese and US folk on that platform, I hope we can see more cool stuff from Japan for Android.)