Apparently support for SourceSafe is set to end in mid-2011. SourceSafe users need not worry, MS has you covered. With TFS 2010 there will be a “Basic” installation option which will allow you to installa TFS (or at least a part of it) on client OSes. Just like SourceSafe. Further more, the Basic version is supposed to be cheaper than the full TFS license.

Now, the only question is what features of TFS will be included in this Basic installation? My guess is source control only. Which is more than enough reason to move from SourceSafe to TFS Basic asap in my opinion.