Ukonline are releasing soon but i can't say when :|
However my connection and many others has been rock solid barr any poor choice in router, unlike Bethere which seems like they are doing a trial on the general public
Oh and the best router i've found (i've tried loads) for adsl2+ is the D-Link DSL-G624M as it has some rather nifty features like adaptive rate management which resyncs in realtime according to the linestats. So no more dropped connections