Their room correction card deals with 20Hz to 200Hz only and this is all you need to fix electronically. Above 200 Hz is easy enough to fix with room treatment.
I am looking forward to the room correction card as I need it to fix some peaks in my room. I have positioned the speakers in the best possible location to get the flattest response with little to no dips, just a couple of peaks.
I doubt we will see any such card until 500 series is doing DVD-A, which of course comes after the 800 series doing DVD-A.