I am. Still on trial version, if I click "Update your drivers" it just tells me "Upgrade now to update your drivers with CCleaner" and offers the Professional upgrade purchase. Same issue across two computers, no updates available. Both are running the free Professional trial.
Driver Update recommended trying the free trial. Upon taking the free trial, it scanned, and began updating, but closed midway through the process, and now refuses to let me use the Driver Udpater on a free trial version. FAQ for Driver Upgrader indicates it should work on the trial right now, and it got halfway through the process before it stopped letting me do so.