Here's is supposed to include.
-- The basic . Windows SharePoint Services is now Microsoft SharePoint Foundation. It requires Windows Server 2008 64-bit operating system with SP2 or later or Windows Server 2008 R2 64-bit.
-- adds collaboration features to the Foundation edition that allows it tie into data repositories outside of SharePoint (including Lotus Notes). Also adds more management features and supports more users. , experts agree.
--Takes SharePoint Server 2010 and adds the high-end search technology Microsoft acquired when in January, 2008. Features include contextual search (such as recognizing departments or geographies), ability to tag meta data to unstructured content, more scalability.