I think it may look like that (it is only my guess, not a leak, not a pre-release prototype, only my personal idea of its visual appearance): I took a 42138 Mustang Shelby and applied 1-stud lowered "42098 unofficial Camaro"'s "face" to fit it under the "eyebrow". I think it looks good enough, only the rear part needs some polishing to raise the bonnet line, like Corvette has.
For sure, no stickers are applied (yet?).