It was replaced by the Studio Camera 4K plus and pro models last year.
The Micro Cinema Camera was still listed on their website until a few months ago but is now gone. Someone said they saw an announcement that it was being discontinued due to unavailability of parts but I never saw such a notice myself.
Resolve 18 Studio, Mac Pro 3.0 GHz 8-core, 32 gigs RAM, dual AMD D700 GPU. Audio I/O: Sound Devices USBPre-2
From my point of view as a small content producer, whilst BMD puts so much investment in ATEM Mini, they definitely lack a complementing camera. BMDPCC is just too bulky for ATEM Mini users, A new Micro Studio or Cinema, which can be controlled by ATEM Mini without any convertors is what most of ATEM Mini users are (presumably) waiting for.