A small correction about the VCS versions VCSMC supports:
VCSMC supports VCS 5.1 (secure and non-secure clusters both)
For VCS 6.0, VCSMC supports non-secure clusters but does not support 6.0 secure clusters (due to changes in embedded AT inside VCS).
In general, any new feature introduced in VCS (e.g. online/offline with propagate option) will not be supported by VCSMC. Older features should work as they did.
VOM will continue to support all versions of VCS (as mentioned by Mike - 4.0 onwards) and new features in VCS as well.
Regards,
Amit.