I vaguely recall you mentioning about this in a different topic. And yes, under the current amendment it will need a reshell.
The thing is, as you are probably aware, Openreach have scaled back G.fast (
linky linky) in favour of FTTP. 10 million premises (as a target) were set to get G.fast by 2020 but now that has been reduced to 6. The unfortunate side of it is that the target for FTTP premises by 2020 has only increased by a million; going from 2 to 3 million (of course it's a whole 1/3 more, but people will have to wait longer). It is progress in the right direction, but the reality of it is that people who would have benefited from G.fast may not receive anything faster until 2025 and beyond.
When I initially contacted Openreach via their form back in April the response I got was probably similar to yours in the respect that it mentioned it was only being trialed in areas where infrastructure was already built and that I need to contact my service provider (lol). I imagine that the key difference between then and the last enquiry I sent is that work has since commenced; pods have been fitted, cabinets have been reshelled (well, at least one that I am aware of). And perhaps because my cabinet had works scheduled it had some bearing.