I think some of the comments so far have been a bit pessimistic. Individual exchanges from previous phases being delayed doesn't mean yours will be delayed. BT announced your exchange would be upgraded last December and so at that point had a pretty good idea how things were going at other exchanges, which includes how good they were at estimating the roll out schedule.
The thinkbroadband article suggested most of the exchanges in this batch (which covered 8a, 8b and 9a) would be done by the end of 2012.
Sky Broadband Unlimited
Ashington (Northumberland) Exchange
Fibre due June 2012!