Speculation at this point....
and that is all anything about SD is. The "rumoured" 605 and 630 are not here yet and their track record for updating receivers is abysmal. When you see it working in front of you, believe it, otherwise, it may never happen. Just ask the 530 owners at digital home. The only thing SD has got working (somewhat) and implemented recently is HDCP.
BTW I am not (from other posts also) really trying to bash SD. They have a great service without as many annoying simsibs as BTV, but the hardware leaves alot to be desired. It could be so much better if it was not just a "side service" to SBS and Shaw cable.
Satboyz