umbraco Courier finally makes it easy to move sites from development to production. By the touch of a button different instances of umbraco can be sync'ed whether it be launching a whole new site, getting the latest content to your development environment or adding new functionality to a staging server.
umbraco Courier even keeps track of existing node id's and make sure that no links go broken when porting between instances.
umbraco was originally scheduled to Q4 2007, but is postponed to Q2 2008 as it will require core changes to umbraco to work optimally. On the other hand, that's good news for umbraco as a lot of the R&D work for Courier will be added to the core for further stability.