New England residents (unaffiliated with either company) may or may not be able to actually subscribe to the Comcast TiVo service, but everyone is welcome to visit their new page. I entered several regional zip codes, in addition to my own, but all came up blank. If you find one that works, let us know! (And tell us how much it costs.) Speaking of web updates, the Australian TiVo site has expanded ahead of a 2008 deployment.
(Thanks for the tip, mtchamp!)