With the Allied Telesyn AT-iMG726MOD/AT-iMG746MOD 100Mbps/1Gbps capable residential gateways supposedly available as of Q4/2008 (press release only with no product page/datasheet), it seems inevitable that Surewest will eventually deploy them. That inevitability is likely still a few years off though.
If all the internet tiers are getting a boost with the deployment of h.264 video, I would assume the increase would be around 50%.
My educated guess for the new speed tiers are 1Mbps to 1.5Mbps, 3Mbps to 4Mbps, 6Mbps to 8Mbps, 10Mbps to 15Mbps, 20Mbps to 30Mbps, 50Mbps staying put, and the addition of a new 75Mbps tier.
I also hope they will do some sort of price drop along the lines of 1.5Mbps for $10, 4Mbps for $25, 8Mbps for $30, 15Mbps for $40, 30Mbps for $60, 50Mbps $90, and 75Mbps for $120, but that is just wishful thinking. Surewest has to realize their higher-end internet packages are overpriced, especially in this crap economy. With prices like those, Surewest could become the dominate ISP in the Greater-Sacramento area.