I was just popping on here to ask the same question. Really hoping that the BBC decides to go back to 1080i60 for future releases, because the 25p -> 24p slowdown really impacts my enjoyment of the show.
I'm sure this is just a straight re-package of the existing discs. I doubt they'll fix anything.
Also, I'm sure this'll be like the Tennant Years release and be an overly-designed (and impractical) release with the discs stored in "pockets" of the book's pages, rather than on hubs, and there will be all sorts of complaints about potential for scratching, etc.