New images have been captured of what is speculated to be Ford’s (F) new Mustang Mach-1. The muscle car was reportedly spotted in camouflage testing on public roads, where best guesses are placing it as the Mach-1 prototype, which is expected to be coming soon.

Because Ford is finishing up production of its Ford Mustang Bullitt in 2020 and replacing it with a new special-edition model for 2021, it is thought that the automaker may be already working on the vehicle’s replacement, Motor 1 reported.

The Mach-1-like vehicle seen in photos has many of the same details as the Bullitt, but some definite differences that could be spotted despite the heavy cloaking. Because the vehicle’s camouflage is heavily placed on the front, best guesses suggest that a new grille is coming along with a new headlight design.

Ford has reportedly slated the Mustang Mach-1 as a 2021 model.

Shares of Ford stock were down 4.23% as of 3:57 p.m. EST on Tuesday.

Ford mustang The new Ford Mustang is displayed during the 17th Shanghai International Automobile Industry Exhibition. Ford plans to make a big comeback in China. Photo: JOHANNES EISELE/AFP/Getty Images