There's a nice little tool on the BT Infinity website that puts things into perspective.
Then go to your area - it's great as it both shows the original date for the area and the updated one.
In my case I'm looking at Greater London:
30TH MARCH 2011
Acton, Beulah Hill, Bowes Park, Catford, Clapton, Clerkenwell, Colindale, Crouch End, Dulwich, Earls Court, Edgware, Feltham, Finchley, Grove Park, Hammersmith, Harlesden, Kenton Road, Kidbrooke, Kingsbury, Lee Green, Leytonstone, Mill Hill, North Edgware, North Finchley, North Wembley, Northolt, Northwood, Primrose Hill, Ruislip, Rushey Green, South Clapham, Staines, Stanmore, Streatham, Teddington, Twickenham, Wembley, West Drayton, Willesden, Winchmore Hill
30TH JUNE 2011
Beulah Hill, Bowes Park, Clapton, Colindale, Crouch End, Edgware, Forest Hill, Grove Park, Hampstead, Kidbrooke, Kingsland Green, Mill Hill, Molesey, North Edgware, North Wembley, Ruislip, Rushey Green, Streatham, Teddington, Upper Holloway, Wanstead.
30TH SEP 2011
Acton, Ashford Middlesex, Clerkenwell, Dulwich, Earls Court, Hammersmith, Harlesden, Kentish Town, Kingsbury, Lee Green, Leytonstone, North Finchley, Primrose Hill, South Clapham, South Harrow, Staines, Stanmore, Twickenham, Wembley, West Drayton, Winchmore Hill.
30TH DEC 2011
Balham, Bermondsey, Chiswick, Deptford, Feltham, Finchley, Hackney, Hatch End, Hayes, Hendon, Kenton Road, Northolt, Perivale, Stepney, Sydenham, Tulse Hill, Upton Park, Walthamstow, Wandsworth, Willesden.
Puts into perspective that the delays to my own exchange were nothing personal. Of the 40 exchanges Openreach were under the evidently deluded opinion they would have ready by March 2011 they managed, err, two, Catford and Northwood. Most of the other 38 were pushed back by 6 months or more, and they perhaps more realistically aim for 20 exchanges per 3 months, including the delayed ones, after March.