The Question is:
Which was the last version of VMS for VAX 4000 computers and in what year was
it released ?
The Answer is :
New OpenVMS VAX releases are under development, and the VAX 4000 series
In other words, there is no "last release" for this series, there is
only the "current release".
For historical information, details on the minimum required versions
for platforms, minimum product versions for OpenVMS releases, and for
the platform support information included in the OpenVMS Software
Product Description (SPD), please see the pointers in the OpenVMS FAQ.