The SP1 for ES4 adds a new feature to Designer.
You're now able to add the document title to the title bar of your PDF viewer.
But the updated documentation is very poor.
http://help.adobe.com/en_US/livecycle/11.0/DesignerHelp/WS107c29ade9134a2c-4ae8b9c912a8713b33d-8000....
1. Only the english documentation describes the feature. No word about in the german help.
2. It states to add the tag <?originalXFAVersion http://www.xfa.org/schema/xfa-template/3.3/ DisplayDocTitle:1?>to the XML source manually but not where!
3. There is no word about that the feature only affects static XFA forms! If it should work in dynamic forms, than there is currently a bug, because it doesn't work.
@the LC doc team: Please provide a more detailed description in all languages you support in Designer!