There is a posting on http://www.revitzone.com/ confirming that development of the Revit Zone website has now finished. But fret not, lots of new Revit goodness is on it's way to their new site at revit.biz
Ian is currently in the process of transferring all the articles and tutorials to the new site. Fear Not: Revit Zone will remain up and running until we have completed the transfer of information and all back links to the site have been updated.
revit.biz has a totally new set of forums which is developing nicely. So please, continue to utilise and enjoy the information that has amassed here over the last two and a half years (YES, it has been that long!). But if you're looking for new info and daily revit links, please bookmark the new site: revit.biz