DC Watch has published their first day live report:-
http://dc.watch.impress.co.jp/docs/news/20100921_395273.html
(in Japanese)
Update: Here is also the Pentax Show Report at the Photography Blog:-
http://www.photographyblog.com/news/pentax_photokina_2010
The most interesting picture is this side-by-side group photo amongst the 645D, K-5 and K-r, with DFA 645 55, DA16-45, DA*55 mounted respectively. Moreover, the K-x is still on the show, which might mean that it is not yet discontinued.
