Microsoft Patterns and Practices released the second drop of the Prism Reference Implementation, which is really just a set of initial thoughts on how to build an Enterprise WPF Application. Expect this WPF Sample to change quite a bit as the developers obtain feedback and try to use and maintain the WPF Application.
Per the Prism CodePlex Project:
"Below is a summary of some of the more significant changes in this release.
- RegionManagerService no longer exposes AddViewToRegion.
- Added a sliding region to the shell which displays the watch list.
- Add to Watchlist functionality now works. A custom AddWatchCommand command uses a WatchListService to add the new item."
Learn more here.