Well in case you missed it (and i guess that you may have) the App-V ADM template got officially released.
Check out and download from http://www.microsoft.com/downloads/details.aspx?FamilyID=67cdf9d2-7e8e-4d76-a552-fd82dbbff9bc&DisplayLang=en
The Microsoft Application Virtualization ADM template configures client settings for the App-V Windows Desktop Client and for the Terminal Services client. The ADM template centrally manages common client configurations by using an existing Group Policy infrastructure and includes settings for communication, client interface, and permissions.
Feature Bullet Summary:
The ADM Template for App-V 4.5 provides central client settings administration for App-V 4.5 deployment, including the following:
- Client permissions
- Client interface behavior
- Client communication settings