Just a sanity check before looking to upgrade. I'm going to wait a few weeks for any show stoppers.

We are currently running 11.1a with external sybase database.

So to go to 11.2.3
Primary servers 11.2, then satellities to 11.2
Deploy 11.2.3 to Primary servers, then satellities to 11.2.3
At this stage we can upgrade the clients (11.1) to 11.2.3 in one reboot.

Or will there be a 11.2.3 media ?