Does your line show it will be upgraded in the BT wholesale availability checker (using your line number and NOT your postcode)?
Yes, if I put my phone number in then it says FTTC is available Dec 2010.
There are 3 green cabs quite close to one another. The one in the middle has a new fibre cab however the other two which are within around 100m by road don't have a new cab. There are 2 more that are within 100m but only one has a fibre cab. If you check addresses nearby there don't appear to be any gaps in which properties will be able to get FTTC, which led me to think maybe multiple green cabs have been connected to one new fibre cab. Seems this might be possible from the replies here.
I'd still be interested if anyone can help me identify which cab I am connected to. I'd be happy moving to FTTC if I knew I was within 500m and would likely get the full 40mb sync. Bt estimate is 29/7 for me, I'm not sure if this is still quite conservative or is more accurate since they updated the checker.