A new Prism drop has just been released! See Glenn Block’s post here:
http://blogs.msdn.com/gblock/archive/2008/03/26/prism-drop-2.aspx
The direct link to the resource is
http://www.codeplex.com/prism/Release/ProjectReleases.aspx?ReleaseId=11976
Views are no longer added via AddViewToRegion(); rather, an IRegion can be requested and an Add method can be called to actually add the view.
Also, a sliding region has been added.
However, I feel the most important change is the introduction of the WatchList Module, which seems to be an interesting way of handling the problem with custom command routing and WPF routed commands…
Unforturnately, its 2 am in Germany right now, and I have to sleep…

