Most of the stuff he's been carrying lately, to my understanding, is all stuff he's testing for a potential roll-out in the future. Everything from the new Cocoon insulating gear, to his pack, and even a tent. The orange one is his ULA Artic Dry pack which he carried on the Artic 1000 trip.
The dark blue/black pack he carried in previous videos is apparently nearly ready for production with only minor cosmetic changes forthcoming. It is roughly 28 ounces and 40L-45L in capacity. It will come with shoulder straps and a hip belt which are modular to fit different body types. It comes with a removable frame, roll top closure, two big outside pockets, and hipbelt pockets.