Dear Mike Scott,
Of course yes - RDS CALs (20) for both Device and User is available for Server 2008 R2 Products. You can generate keys based on your subscription level. Please check the following page.
Windows Server 2008 R2 Remote Desktop Services Device CAL (20)
Windows Server 2008 R2 Remote Desktop Services User CAL (20)
I dont see those items on my keys page, but that might be because of the subscription level I have. Can you post a screenshot of it (obviously hiding the key values!) ?
Mike please also see the bottom of this help page for more info about Terminal Services and RDS in MSDN:
MSDN and TechNet Subscriptions Support
Read the Subscriptions Blog!