As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
Alfresco has been fairly open with the fact that their 'Explorer' client which is based on JSF technology is no longer being actively developed. While JSF is still around and actively used at a lot of places, it is a 'heavier' technology compared to a lot of whiz-bang Web 2.0 stuff. Alfresco is now investing development cycles in Alfresco Share.