So what is unique? Any guesses?
Since air conditioning was mentioned and there is no unit on the roof, I am guessing there is an in cabin marine type unit. They teased with photos of a couple of metal boxes and mentioned 24/7 air conditioning. Those boxes have shown up twice now. The first was when Jim Hammill first suggested them and then in Campskunk's mention of Davy off in the corner. Webasto has a Blue Cool unit that would fit in that box. There are some 12V semi truck air conditioners than can run a claimed 10 hours after engine shutoff.
With the solar panels on the roof they have the front wind deflector cowling but the panels themselves look very low profile instead of being on hiked up on carriers, so they may be low profile flex panels.
The other comment Hammill made was 100% guaranteeing there are AGM batterie
s in the B. He might have garbled his semantics but there is one AGM chassis battery in the Sprinter. If they aren't utilizing lithium-ion batteries they are hardly cutting edge and there doesn't seem to be any indication of accessible battery compartments which you would need for AGM.
They show cabinetry built in over the wheel wells that has to be at least 15" high and the Alde floor heating extending into the bed area. That indicates possibly higher than normal twin beds.
Campskunk mentioned the cabinetry latches. The push pull latches Roadtrek currently uses suck big time. All the talk on Roadtreking.com is how to overcome the rattles with magnetic latches. Their cabinets are hard to pull sometimes and you can't grip the Roadtrek smooth cylinder pulls very well. So my guess is they are upgrading them to easier grip push pulls or they are going to the marine style flip out pull latches.
Sleuthing is kind of a fun exercise.