Ex-Marilyn Manson bassist Fred Sablan, Youth Code vocalist Sara Taylor, Suicide Silence drummer Alex Lopez, and Rob Zombie bassist Piggy D. reportedly are all in the studio working on a brand new project together.
According to The PRP, Sablan posted on his Instagram a picture of the group in the studio with the caption "Just wait until you hear what we’re doing…"
Nobody besides Sablan has said anything on their social media accounts just yet, so for now I think this should just be treated as a rumor with some solid grounds for believability.