Robotkingdom's Facebook page has posted pictures of a Platinum Edition 2-pack of Voyager Evasion Mode Optimus Prime and Grimlock, now sporting vac-metal highlights. Click here for mirrored photos and more info! The Facebook page shows us that the bechromed pair looks pretty good overall, with Evasion Mode Optimus in particular looking somewhat closer to the earlier, more G1-accurate promotional photos of the toy. Grimlock's chrome too looks pretty tasteful, restricted mainly to the head and back of the dino.
The page also says that listings for the figure will be posted on the 17th, the same day Age of Extinction figures officially hit brick-and-mortar retail stores. RobotKingdom has split Platinum Edition exclusives with BBTS and ToysRUs before, so this is likely another such case.