Brian Harry has a post on a little gem called Team Foundation Server 2010 Basic. Price and such is not yet know, but it is set to be a replacement for Visual SourceSafe.
TFS 2010 Beta 2 is available for download (if you’re an MSDN subscriber).
Read the more here: http://blogs.msdn.com/bharry/archive/2009/10/01/tfs-2010-for-sourcesafe-users.aspx