Diferences between Brightmail Gateway versions (document)
I was not able to find a single document that describes the diferences between brightmail gateway versions ( version 8.0 Version 9.0 Version 9.5 Version 10.0).If there is one please provide a link
The release notes for all of
The release notes for all of the products will explain what is new the newer version. For example, here are the release notes for 10:
There is no reason not to be on version 10.0 aside from having out of date hardware.