For RDS users out there its an easy process to get your hands on the binaries. App-V 4.6 for RDS (formerly App-V for Terminal Services) can be downloaded immediately here.
Once at the site click Continue. Certain Registration details will be required to allow the download to take place.
Once you have completed the registration process you should be good to download the .iso
Happy Days!!! Enjoy deploying all them Windows Server 2008 R2 x64 boxes ;o)