There is an interesting article over at Light Reading, where a senior VP at Comcast states that they plan to reclaim 240 Mhz of bandwidth by using SDV and a new compression scheme. The new compression scheme will be rolled out everywhere next year and is supposed to "improve bandwidth efficient by 50%". It also goes on to mention that Comcast plans to implement MPG4 compression. Is the S3/HD compatible with either this new compression scheme or MPG4? It also mentions the planned rollout of SDV. It lists Cherry Hill, NJ as a test market (which is a Scientific Atlanta area). My area is a Motorola area so they aren't the same market, but I spoke to a local tech and they expect SDV to be in my area by the end of the year. TiVo mentions that the dongle should be available before SDV is widely deployed, but that date is fast approaching.