It looks to be a mix of pro and amateur features.
The price is about right at $1,799.95 - at least for a full-frame camera. And, of course, you can use it with nearly any K-mount and M42 screw-mount lens (with adapter) that you can attach to it.
Downside: No 4K video recording, which is the new thing.
Upside: Dual SD memory-card slots, weather resistant body and little LED lights that throw a bit of light on key areas.
Like a pro SLR, there isn't a built-in flash, and the battery can last for 760 shots, which is about double of most amateur-level cameras. There also is a battery grip available.
I think there's a lot to like and probably a few things to not like, such as a fairly small number (33) of AF points compared with other pro-level DSLRs. And the camera has an astounding number of buttons, switches and dials.
» Read about the Pentax K-1 here
Plus, Pentax added two more KAF3 lenses: a superwide 15-30mm and a new kits lens 28-105mm.
Read about the lenses here.