Today RES released a cool utility which will help existing XenApp customers implement PowerFuse way more swiftly. What the tool does is read existing published applications from a serverfarm, create the applications inside PowerFuse and create new PowerFuse managed published applications. It even reads any existing file associations configured in the Xenapp environment – Übercool!
There is a nice PDF which describes things well here: The Migration tool can be downloaded from RES here.
Remember, you saw it first on RESguru.com! ;-)