It's not a Shadows Fall reunion, but it's close! Carnivora has recruited Jon Donais (Anthrax, Shadows Fall) to shred some guitar on their new track "Hypnogenic", while Matt Bachand (Shadows Fall, Act of Defiance) provided some additional vocals.
The song was produced by both Bachand and Chris "Zeuss" Harris (Rob Zombie, Hatebreed).