VS2022 v17.10 will be officially released soon. _MSC_VER is 1940 so it will not be mapped to 14.3 in boost code.

https://github.com/boostorg/config/blob/5734e160e08b8df898c7f747000f27a3aafb7b2b/include/boost/config/compiler/visualc.hpp#L375C1-L377C9

https://devblogs.microsoft.com/cppblog/msvc-toolset-minor-version-number-14-40-in-vs-2022-v17-10/