At the end of November my crew wrapped up our work on the Get Latest on Checkout feature and checked it into the Orcas sourcebase.  This feature is obviously targetted at users who are more comfortable with the Visual SourceSafe model of exclusive locking combined with Get Latest on Checkout.  Note that the TFS Get Latest on Checkout does not implicitly turn on exclusive locking; you will need to do that explicitly.  Details about this feature and others our group has been working on for Orcas can be found at Feature Specifications for Visual Studio and .NET Framework "Orcas" on MSDN.