We've just published the second drop of Prism. As Glenn wrote in this post, some of the changes in this new drop are:

• 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
  
  

For more details on the new functionality added, please check here.

Thanks in advance for your feedback.

Crossposting from here.