The Pentax K-3 Mark III Monochrome camera is listed as discontinued at B&H Photo:
The Pentax K-3 Mark III Monochrome camera was announed 3 years ago (April 2023):
Ricoh announces new Pentax K-3 Mark III Monochrome DSLR camera
The Pentax K-3 Mark III DSLR camera was discontinued last year:
Pentax K-3 Mark III marked as discontinued on the official website