[Zope] CMF

Is the CMF still used in Zope? I have looked briefly at the documentation for CMF and Plone - they appear similar. What is the difference - does it make sense to use CMF for developing new sites? The CMF documentation is referenced on the main zope site http://cmf.zope.org/Members/beehive/ZWACKChap5.html but it seems quite old - last updated in 2001, and some notes about a scheduled move, which apperantly has already taken place... Cheers Jesper