Lorne, MTS did an update last October that included the Whole Home PVR feature. A contract installer told me there is an update scheduled for February, but couldn't give me details on the contents.
I'd like to see the ability to record programs that happened in the past, but I think the problem would be licensing. My understanding is in the U.S. the cable companies have to negotiate rights for each individual program. In Canada, I wonder if they would have to negotiate with the production studio, the Canadian broadcaster, or both.