We do not yet have any public releases (including public betas) with support for the T2-based SMCs in the 2018 Mac Mini and 2019 Mac Pro.
We are working on it, but I do not have anything I can share publicly right now, sorry.
thanks a lot for the information. Is there any (closed) beta, where I could participate?
We would also buy better licenses, as soon this works.
Apologies for the substantial delay in my reply here, Henri. A colleague just brought this thread to my attention again after it fell "off my radar".
Since I last posted here, ESXi 6.7 P02 has been released, and that release includes a fix for the problem which prevented macOS guests from running in ESXi on Mac hosts with the T2 security chip (e.g. 2018 Mac Mini, 2019 Mac Pro). William Lam has a nice blog post about it which is probably worth a read, discussing the various improvements as well as the limitations around support for these recent systems from Apple.
I hope that it meets your needs. If not, please do get back to me with feedback.