Actually The free
DDp was offered in the UK last year, it was released in about JUne time. I know because My mum and I booked in the MArch for september , in the June WDW released the free DDP, for late August throught September. Unfortunately we could not change our booking to take up the offer
The impression over here in the UK, is that it will be offered again. Many people here have already taken advantage of the Free plan offered for bookings before Nov 06.
We are waiting for its release again in June/July for this september, as Mum wants to go back.