I'm in a process of upgrading our Zen environment here. The agent today is so about time :S

It's an AD/Middletier setup with agent distribution via GPO and only 1 (windows) serverreplica so should be smooth running.

Is it as easy as setup-next-next-next then roll out new agent?
Pre-requisites seems fine, eDir on 8.7.x.x and updated windows on clients.