PhotoRumors has just told this, just believe it or not!
http://photorumors.com/2010/08/30/pentax-announcement-on-september-9th/
Anyway, there is only 9 days to come. Will there really be a K-5 and a K-R, or even a Pentax IDLC. If the mirrorless is true, will it be using a new mount or keep using the K-mount? But then if using the K, how could Pentax manage to make the new body thinner and streamline it??
Well, let's wait and see! We will know soon! :-o