If you are an Apple Developer, you should know about a change Apple made to the iOS Dev Center yesterday.
The previous "iOS Provisioning Portal" has been replaced with a new "Certificates, Identifiers & Profiles" page. The changes appear to be primarily to the user interface, but they are extensive. This means that the Adobe Step-by-Step Guide to Publishing iPad Apps with DPS, Single Edition and the Adobe iOS Publishing Companion Guide, Professional & Enterprise, are now out of date.
Adobe has indicated that they are working to update these guides. Until then, if you need to create or edit certificates, UDIDs, or provisioning profiles for use with Adobe Digital Publishing Suite, you will need to work to reconcile the new interface with the existing instructions.