I'm working close to SD team to release version 1.3 and it will be out very soon.
Following are the list of main AD features:
- AD will target .net 4.0
- Resizing of panes and flyoutwindow is realized with preview splitters. This feature should alleviate resizing flickers on panes hosting directx/gdi components.
- Documents layout are serialized together with dockable panes.
- Many fixes in many areas.
- New theme called dev2010.xaml very similar to VS2010 theme
- Replaced many CLR properties with dependecy properties. With this feature should be easier template AD controls.
this is a screenshot of SD 4 with AD 1.3.3000: