I could totally see them making up the two miles that we are missing by skipping DHS and having us go through WWoS (behold my MS Paint Skillz). We're in there for 2-3 miles during the marathon, so there is room there (SO MANY TWISTS AND TURNS ARRRG).
My official guess: we start out with a few miles in WWoS, go through Animal Kingdom as usual (DISCLAIMER: I'm paying zero attention to what is going on construction-wise in that park

). Then we get to where mile 8 is marked in the above map - instead of going straight there, I could see them having us turn right (marked in red) and meet up with mile marker 11 (again, using the old map posted above and my MS Paint Skillz) and then follow the rest of the route through Epcot and to the finish.
2. I'm guessing dark colors - dark blue, green, maroon, black.
3. Temps in the 50s/60s with no precipitation!
4. My #1 wish for any runDisney race is Steamboat Willie! I don't think it'll ever happen though.