You won't get any more HD out of the BBC either. The money isn't there. Auntie beeb is only backing this plan to try to stem the flow of people moving away from the terrestrial platform, which it has already spent a considerable sum of licence money on.
This HD expansion has been in the pipeline since last year.
Mind you, if Ofcom keep "raiding the cupboard" of terrestrial frequencies, there won't be space for a decent service anyway.