Just wanted to note down some pure speculation for next summer:
I think it's possible we'll see two D2C's with the theme performing so well and people, on the most part, loving the D2C's.
I would guess Gringotts for sure as everything is pointing to us getting it next year but as the second one I think a UCS Knight Bus would work for the theme really well. The new design lead has worked on many of the previous Creator Expert cars so it seems a perfect match for us to see a set like that under the new influence of the design team.
We could end up with something totally different but just wanted to put my thoughts out there before any rumours surface!