Now that the Windows Server 2008 R2 beta (download link)  is out and everyone realizes that this is going to be 64-bit only release the question becomes even more pressing.  So when is 64-bit coming? Here you go: Microsoft Application Virtualization (App-V) will support 64-bit applications and platforms in H1 2010, with TAP availability expected in late 2009, announced Microsoft at TechEd IT Pro in Barcelona, Spain.