Minor EV upgrade on the server ?

Hi,

I can seee that there is newer version (Symantec_Enterprise_Vault_9_0_5_Win_Multilingual.zip) of EV 9 at the moment in my Fileconnect portal.

So assuming that I can upgrade the server successfully, do I need to upgrade all of the clients (Outlook) and als o the FSA agent in the file servers ?

Is this the prerequisite before I can migrate EV 9 into another server with EV 10 ?