They uploaded the 30 second PV#6 today, and a few days ago they also uploaded the interview for PV#5:
edit: Wow, incredibly, PV#6 was too fanservicey for YouTube to handle, as it was "removed as a violation of YouTube's policy on nudity of sexual content." And the millions of other YouTube videos out there with swimsuit-clad anime girls aren't a problem?
Anyway, it's still watchable on the main site, and the interview link below is unaffected.
http://prism-nana.com/html/interview_20130305.html