This was rumored about 2 1/2 years ago. At that time, stories had the 4.8 replacing the 5.0 in the 2018 Mustang and F150. It was mentioned then that the new engine would have dual fuel injection. The 2018 5.0 did get the dual injection so I'm guessing the story is wrong now as it was then. With all the emphasis on the ecoboost V-6's and as good as the 5.0 already is, it doesn't seem likely Ford would go to the expecnse of designing a new small V-8.