See:-
http://egami.blog.so-net.ne.jp/2010-11-29
(in Japanese, Google-translated English page here)
So, we see an ILDC box and diagram drawn by Pentax, but nobody except Pentax knows if there is such a camera or not, not even for a prototype. Regarding the built-in flash design of the patent, I don't see it has any major breakthrough and significant difference against that of the Pana GF1 or the Samsung NX100 or the Oly EP-L1 or whatsoever, which is just very similar after all, frankly.
