I think Ricoh is likely to keep the focus on the KP at the CP+ stand, and is unlikely to release another Pentax camera (i.e. anything out of the Philippines) just now. They have some new merchandise that they will be selling at CP+ to promote the KP.
????????/???????? | RICOH IMAGING
It seems like high time for some lenses, though, either actually released or just displayed. In addition to the ones on the roadmap, we could see some others, including another Tamron rebrand, like a cheaper tele zoom for the K-1. I think there is a clear business case to let customers know new lenses are coming, especially for the K-1 and 645z.
They could be due for a new Ricoh camera. I note that the GXR was
finally removed from their product list on the Japanese website a week ago. It was always a bit of mystery why it was still there, when it was long since unavailable and other more recent cameras had come and gone. It makes me wonder if it was only sitting there as a kind of placeholder until some kind of successor was ready. Another possibility is something WG. As far as I can see, the WG series still sells relatively well for a compact, at least in Japan.
Finally, they sometimes demonstrate technologies that are not tied to a specific product. Pixel Shift Resolution was first shown at KP plus, before the K-3ii itself was announced. This turned out to be quite a big deal, although it didn't seem like much to start with.