WaveLab 11.1 is transitioning to Steinberg Licensing. New WaveLab 11.1 licences are being issued on Steinberg Licensing. A mechanism to migrate existing WaveLab 11 licences to Steinberg Licensing will become available shortly.
It appears the same transition to Steinberg Licensing will apply to WaveLab Cast 1.2, though it is not entirely clear from the announcement.