Same as Citrix: Doc says "Adobe requires that organizations have a valid Acrobat software license for every user that has access to Acrobat on the Citrix server. Note the 10.x licenses can only be used for 10.x products, 11.x licenses can only be used for 11.x products, and so on."
I've asked for a link to the latest licensing policy. Will send when in hand.
hth,
Ben