Pentax released a
video for 2020 CP+, which was cancelled because of the emerging pandemic. They announced, "In this video, members of PENTAX’s Product Planning Department will describe a range of models now in development, including the next flagship model of the PENTAX APS-C-format digital SLR series and new interchangeable lenses. A great chance to witness the future of PENTAX!" They also released
several seminar videos.
CP+ 2021 was entirely online. In my searching, I only found the press release announcing delay in K-3 Mark III. There was a talk (in Japanese without subtitles), however,
for which they released shortly after. See this
PentaxForums thread.
CP+ 2022 was entirely online, but Ricoh/Pentax did not participate.
Please, by all means, make any corrections to this summary, which is based on a few quick searches.