Ricoh is rumored to release a new Pentax K-1 Mark II DSLR camera instead of just a firmware update for the current K-1 model (already rumored to be discontinued).
Right now the Pentax K-P DSLR is the APS-C flagship model, but a new high-end APS-C model is in development and could be announced later this year (but it will not be called K-3 Mark III).
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Via PentaxRumors