Many thx !
However in ESXi Shell there was no info/message that reboot is required; I updated various ESXi hosts to 7.0 U3n today using "VMware-ESXi-7.0U3n-21930508-depot.zip" and I asked myself if I can update at e.g. noon but reboot ESXi hosts later in the evening.

Thx for clarification !

Kind regards
Christian