Adobe has made a new trial version of LiveCycle ES available for download on the LiveCycle Developer Center. Anyone who has downloaded and installed the LiveCycle ES Preview Release posted online in May should definitely upgrade asap as there are a large amount of improvements in this production quality release.
If you haven’t yet tried LiveCycle ES but have evaluated LiveCycle 6 or 7, have another look as there are far too many changes to list here but favourites include Flex integration, Common visual service orchestration, Form Fragments, Numerous invocation methods, Form Guides and much much more.
Just noticed that there is a migration doc that guides you through the changes from the LC ES Preview Release to the LC ES Trial download here – http://help.adobe.com/en_US/livecycle/es/migrate_livecycle.pdf