As with any upgrade, remember to take a back up of your data!
If you are working in a multi-user environment do make sure you upgrade all the DriveWorks Modules eg DriveWorks Administrator, Autopilot, any DriveWorks User licenses, DriveWorks Live AND of course DriveWorks Pro Server.
If you are upgrading from an earlier version, eg DriveWorks 9 or 10 make sure you have your new DriveWorks 11 license keys to hand.
You will find Release Notes in PDF format in each of the communities.
You will also find guidance on upgrading in the online HELP documentation.