Me too! I am very curious as to their planned routes for both the 10k and half marathon. The 10k description on the
rD site seems to imply the last 6.2 miles of the full marathon course in reverse, and the half marathon description from the
original announcement might imply the W&D half in reverse, although the announcement list order is Epcot, Animal Kingdom, Disney's Hollywood Studios, and ESPN. So, if order matters, this would not exactly be the reverse of W&D.
What is most interesting to me on these potential "reverse" routes is that the narrow boardwalk path to DHS would come early in the races. It seems to me that this could be problematic. I think there is a good reason why they typically put the boardwalk path later in the races. I guess it is possible that they don't use the boardwalk path (or at least not the narrowest part between BWI and DHS), and instead go onto Epcot Resorts Blvd, but this would definitely be less scenic for the runners.