Fortunately there are two easy ways to determine which Branch of Office 365 ProPlus your PC is using:
- In the Registry look at:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\office\16.0\common\officeupdate > updatebranch (type = RegSZ) set to CURRENT or DEFERRED
- Launch Word and click FILE, ACCOUNT to see the version number then compare it to THIS Microsoft Office version number list. The Office version list tells you which update branch you are on and when it was released.