No announcement at 1130. AEST. Tho Vahn put out a hint in the form of a joke tweet - implication being DLC SMG DOES NOT remove diamond camo on either SMG or AR.
If you buy the DLC, you have to complete the challenges for the Peacekeeper to get Diamond for SMGs and Assault rifles, since it's hybrid.
just before someone starts getting the wrong idea...
straight after that tweet Vahn said he was joking