True, true, quite true. I think we all have a wait and see attitude, amplified by the lack of hard data, and the usual dearth of Mits DLP reviews.
Light control notwistanding, I must say the picture in that first video looks pretty great. And maybe you'd need to control your lighting at home to maximize the picture. Still easier than a front projector setup.
Last year the same Mits product development chap did a little show and tell with the 2010 82 inch, in very subdued lighting, and the 92 in comparison has much more punch. I'm guardedly optimistic. (Maybe not so guarded!)