If you look a little closer, you'll notice that every item they advertise has something "special" coming on August 22nd. So with that said, I doubt it has anything to do with Mavic hardware. Probably just a good deal.
Next to the advertisements, it has blurred out images. In the Mavic's and Phantom's ad, it does seem to resemble something in the shape of their respective batteries. In my opinion it looks like 3 items: a battery, sd card and something else. Maybe some sort of combo? If you look at the
phantom 4's blurred image, it also shows a battery with 2 mystery items that are exactly the same as the Mavic's. I'm sure it's probably just a combo that you can now buy separately. Essentially, the fly more combo without the drone as Mavic90701 said above. Or an extra battery, sd card and something else for the base price of 999.