I heard there were still lots of Silver boxes in use with BT. From what I remember... and it's been a while, even the silver boxes can start from an empty disk and receive partitioning config and full OS over the air. The suggestion was that they were going to push this out quickly so I wouldn't be suprised if they went for quick and dirty linux to work with the old bootloader on current boxes then roll out linux proper with their 3rd Gen... We'll see...