Here are some tips for helping you, while on-site, to identify whether a CTP system is using CFL or the new DFL technology:
New DFL-based devices will not be shipped with a customer dongle, so if you do not see one then the device (if operational) is definitely running a DFL controlled release (CR).
Some existing devices upgraded from CFL to DFL may still have the customer dongle connected. In this case, you can login and check the desktop.
If the CFL License Manager is installed (look for the icon on the desktop), then this device is running a CFL CR. Otherwise, the device is running a DFL CR.
Open ODST. If its version is 2.x.x or greater, then it is a DFL CR (the authorization tool icon will also be visible). All lower versions are CFL.
If the main firmware version is 2.00.00 or higher, it is a DFL CR. This applies for all products.