And this is iXSystems' idea of a STABLE software version? One that in a sub-point release suddenly and without warning drops support for significant features? And yes, the ability to run arbitrary operating systems in a VM with a nice GUI to manage them is a pretty significant feature. bhyve/iohyve aren't close to being a replacement--even if bhyve is a better hypervisor, guest OS support is much narrower (compare
https://wiki.freebsd.org/bhyve with
https://www.virtualbox.org/wiki/Guest_OSes), there's no clear way to migrate a VM from VirtualBox to bhyve, and there's no web or other GUI.
Fail, folks. This is not a way to encourage your users to keep up-to-date.