It was planned the Pentax Q show would be held on 3rd to 4th of September with the first-time demonstration of the new K->Q lens adaptor. But owing to the approaching typhoon near Osaka, the show has to be cancelled, at least for the first day, see what DC Watch reports:-
http://dc.watch.impress.co.jp/docs/news/20110902_474816.html
(Google English Translation Here)
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