The fuel economy of the new 2017 F-150 3.5L Ecoboost and ten speed transmission combination has been released for the 4x4 configuration, it's on fueleconomy.gov. The good news: 2017 F-150 fuel economy is about 10% better than the 2016 3.5L Ecoboost and six speed transmission.
2016: 15 mpg city, 20 mpg highway, 17 mpg combined
2017: 17 mpg city, 22 mpg highway, 19 mpg combined
A nice increase for the new engine and transmission. The bad news is that after all the work on the aluminum body, new engine and transmission, it's still only 19 mpg.... It is the 4x4, so it will be interesting to see the 4x2 fuel economy ratings.
Link: https://www.fueleconomy.gov/feg/Find.do?action=sbs&id=37053&id=38215
JB