Hello Aronne
A VTP v3 implementation as you suggest has a single primary VTP server that plays the role of the source of all VTP information. Only a primary server can alter the VLAN database of any server or client in the domain, and there can only be one primary server. It is the only device that can send VTP updates, and all other devices, whether servers or clients will receive them and process them. In such a topology, there will never be another device that sends an update with a higher revision number within that domain.
Even if you are interfacing with VTP v2 clients/servers, at the boundary of the two protocols, a VTP version 3 switch will send out both version 3 and version 2-compatible messages. However, version 2 messages received by a version 3 switch are discarded.
I hope this has been helpful!
Laz