Read this:-
http://bbs.kakaku.com/bbs/K0000416049/SortID=15794099/
(in Japanese)
This rumour is actually a few weeks earlier than what Photo Rumors told us about five new Pentax/Ricoh cameras are to come just on the day before. The Japanese OP seems to know something. Btw, it is said that the K-3/3s is an APS-C body with 24MP pixel count, just! >:-|
Edit: Thanks to "phoenix15" for his/her reply in the Comments section (the 1st one), we have another latest post found at the kakaku forum by the same OP:-
http://bbs.kakaku.com/bbs/-/SortID=15883682/
(in Japanese)
It is told that a lower entry level DSLR model than the K-30 with a 16MP sensor (APS-C of course) will be marketed also, and that the K-3/3s will replace the K-5II/IIs.
So, the above have already made up the four new Pentax cameras that will appear, whilst the remaining new camera I guess would be in the Ricoh brand name.