Tv broadcasts... highly doubtful. The talk of the 2012 olympics being shot in 4k would be for dedicated lines to screen in london - which would of course be able to cope with the bandwidth. As for getting 4k HD on blu-ray... it steps a little over the mark at the minute. While it would be possible to get it on a 50gb disk - current blu-ray video streams at about 25mbps from the player & with 4 times the pixels, it would need 4x the bandwidth... so 100mbps. The problem there is, current blu ray readers are only able to read at 80mbps. So either an increase in reader speed or a better compression format would be needed