For those who are planning to upgrade ACF2 release, there is Upgrade CA ACF2 section added in DocOps. It includes steps needed for upgrading to a newer version of CA ACF2. Please follow on link below:
Upgrade CA ACF2 - CA ACF2 for z/OS - 15.0 & 16.0 - CA Technologies Documentation
And for CA #TopSecret users, documentation is available for the following upgrade scenarios:
Kris HorgenCA TechnologiesKris.Horgen@ca.com