Samknows says that for pretty much all the exchanges that are due 30/06/12 according to BT (including mine)
Also note that samknows only tracks the exchange activation date. There is no guarantee that your cab will be ready at the same time as the exchange. The often quoted figure is that 10 cabs is the standard number that are ready in the first batch.
Sky Broadband Unlimited
Ashington (Northumberland) Exchange
Fibre due June 2012!