Which on the face of it seems good and I have seen digital voice will be coming in June for my area.
What do you mean by digital voice coming to your area? Is that VOIP from a particular ISP?
PSTN is already in stop sell. If you want a phone package from your broadband provider then it's already going to have to be VOIP (or what some call digital voice).
Some providers are force migrating existing PSTN customers to VOIP. They can do this in phases, possibly even by area. However there's no specific area by area rollout of VOIP and it has diddly squat to do with Openreach or full fibre.