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 e.g. DriveWorks Administrator, Autopilot, any DriveWorks User licenses, DriveWorks Live AND of course DriveWorks Pro Server.
If you are upgrading from DriveWorks 9 to DriveWorks 10 make sure you have your DriveWorks 10 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.