
New Pentax APS-C camera is rumored to be announced at the 2019 CP+ show in Japan (February 2019):

After the GR III announcement at Photokina, there is still one more registered but not yet officially announced Ricoh camera: Ricoh’s R02010 is expected to expect the Pentax brand new SLR because Bluetooth is not described in the GR III developed and announced last month (although Bluetooth may be added in the product version).

Ricoh has a new series of articles called “Make the most of your PENTAX camera“. The first two articles are: How to optimize focusing accuracy with large-aperture lenses The PENTAX Hyper Control system: A quick, effortless way to find the optimum exposure settings
Pentax K-1 Mark II Astrophotography Review