OK, we have been beating the mpg subject to death on the truck forum, asking the same questions as you have here.
As I stated, the line is producing customers vehicles, with no EPA numbers. They will be forced to post them when they start shipping to the dealers, supposedly before the end of Nov. The scuttlebutt is that the truck numbers are good, up to 20% better than 2014.
Here is what I understand so far.
The holdup is Ford. The EPA does not do the actual original mileage testing, the manufacturers do it and the EPA spot checks the results. But, because there has been so much controversy and complaining about the figures, the EPA has mandated a supposedly more reliable real-world test, and put the manufacturers on notice that they will be checking the results.
So now, at least on the truck, I think Ford is trying to figure out the highest mpg numbers they can post, without the bad publicity of the EPA saying BS on the numbers, which would be very embarassing.
Here is all you want to know about EPA testing, and more than you might want to know.
http://www.fueleconomy.gov/feg/how_tested.shtml
I believe that they are going to do the same thing on the Edge.