This twice.com article suggests that Pentax/Ricoh will announce a new DSLR next month at the CP+ show in Japan:
“The CP+ Camera and Photo Imaging Show in Japan starts Feb. 23, and camera brands like to introduce new models in their home country; expect more announcements at that time from some of the firms that will not have a big presence in Las Vegas. Pentax is supposed to introduce a new DSLR there and its current models, such as the full-frame K-1, will be on display at parent company Ricoh’s booth.”
Update: the rumored camera could be a new Pentax KP DSLR.