MSVC: C++20 final flag, C++23 support
VS 16.10.0 Preview 4 with CL version 19.29.30036.3 already seems to support it despite not listing in help and being announced only for the final release.
Backport: release
VS 16.10.0 Preview 4 with CL version 19.29.30036.3 already seems to support it despite not listing in help and being announced only for the final release.
Backport: release