IIRC the Australians saved a few bob last year by breaking up for Christmas in the first week of December. I remember Finningley once doing similar wef mid Dec in order to save on heating and electricity.
If Future Brize is sucessfull; I can forsee it being used as a model for UK Airpower Plc. Perhaps Belvedere is simply simmering on the back burner. One wonders why the rumour appears confined to the RAF and not our green and dark blue colleaques.