There's never been anything on either local council or roadworks websites for cabinet installs in Cove.
There's no new green boxes in the vicinity of those cabinets at all, with fresh tarmac?
It may be that they are having difficulty finding a suitable location for the fibre cabinet. Are there any lamp posts nearby where they would take power from, that would be within the 100m of the existing cabs?
Odd that nothing has been done, as you say there's been a load of work in the rest of Cove recently.