If something does materialize out of this it will be interesting to see if they follow the BB/CAN/AU route and build the house in a warehouse somewhere or whether they'll go for an actual studio. According to the Elstree studios website the new stages that were build in place of the old house (Now called Platinum Stages) are set to open for bookings in 2022.
https://www.elstreestudios.co.uk/new-stages/