The current timeline broadcasted is Q1 2015.
As far as I can tell all the cabinets are getting replaced, and certainly the ones by our office (Mill House, High Street) have started to be setup.
This also means that there will not be much fibre on the core network (otherwise you would not need the new cabinets) so there is quite a few KM of cable to lay. It takes some time. Q4 2014 seems a little unrealistic, but BT are getting better at these transitions.
Superfast website has finally updated to PA (Planned Area)
http://www.superfast-openreach.co.uk/wh ... ?pc=dy76erbut the south staffs superfast has more detailed information.
I know some houses in Kinver wont be able to get infinity once the roll out is complete, due to length from the nearest cabinet.
It may well be that all cabinets wont even be upgraded (a typical BT thing, which annoys everyone) - so keep your eyes peeled on yours
Hope that helps.