This is a client only hotfix. The issues it addresses includes:

  1. A problem when the PackageSouceRoot is set to something more than two levels deep.

The hotfix is a self-extracting exe that holds an installer for both the RDS and Windows Desktop clients.  These are upgrade installers.  Traditionally, App-V Hotfixes also include prior hotfixes for the same version, so while we have not verified this case, the hotfix should also include hotfix 1 and 2 for SP1.

The hotfix requires an email address for tracking the downloads, but approval appears to be automatic.

Additional Links: