It's been previously announced that Openreach have started doing some network rearrangement already, to continue for the few of years (finishing 2020/21). Installing about 2,800 extra cabinets. It was in the BTWholesale January ISP Forum slides.
@skyeci
I seem to keep saying this, the type of FTTC cabinet doesn't matter for G.fast, it requires new hardware to be installed. It won't make much difference if it gets put in a new cabinet, squeezed into empty space in an existing cabinet, or tucked away underground.