Well it's about time, being stuck on the old original ADSL product myself like so many other early adopters and trialists, we had no upgrade path to higher speeds, without a couple of weeks of downtime. Yes we love the good old engineer install.
Well all that changed a few hours ago when Demon announced they were going to move everybody up to 2Mbps or whatever their phone line supported. Although it's primarily a BT thing it's nice that Demon have finally announced it (most ISPs did months ago).
All the exchanges should be upgraded by September.