Correct. Current models are:
505 - single tuner
530 - dual tuner with DVR, but DVR only reliable on one
These will do DCII QPSK/8PSK modulations, but can only decode MPEG-2. There is a slot for a H.264 decoder that may have been prototyped, but Shaw appears to have no intention of releasing it. The digital video output is DVI only, and customers seem to have compatibility problems with it.
The new models are:
605 - single tuner
630 - dual tuner with dual DVR
These should do everything, DCII and DVB-S2 QPSK/8PSK modulations, MPEG-2/H.264 decoding, but likely only DCII decryption. Shaw is hurting at the moment for bandwidth, with HD restricted to 8PSK/MPEG-2 and SD restricted to QPSK/MPEG-2. To their credit they have kept the channel counts down in favor of quality, exactly the opposite of their direct competitor. The 6xx will have HDMI outputs.
The 6xx series should allow Shaw to push forward with more HD channels and perhaps recycle the 5xx series for SD to open up more space with 8PSK. They also have special authorization for lo-band Ku on their upcoming birds, which has people guessing about what LNB configurations will be used and associated switching requirements for the receivers. At the moment Shaw receivers only need to support polarization voltage and 22 kHz switching.
While I have no reason to suspect Motorola will do the right thing for the long-suffering 4DTV crowd, the 6xx series will be the first opportunity in a long time for a consumer DCII receiver to catch up to commercial DCII technologies. If the SRL et al were to make a move, this may be their last good chance. But it's hard to see the numbers working.