Not so sure I believe all that...
40 is a ridiculous number of test mules for a specialty truck..., I doubt they had 40 test mules for the DT project itself.
There's been spy shots of many black test mules, wearing different fascias, and one red mule with a big horn grille as well, but no white trucks been caught, (as far as I know).
The trucks, no matter what anyone here tells you, were not designed for the amount of horsepower and torque the Hellcat and Demon motors put out. And those motors were not designed for truck duty cycles either. It sounds fun, but I highly doubt we'll see anything from the existing Hellcat under the hood, let alone the Demon. Maybe, and it's a big maybe, a de-tuned Hellcat engine. More likely, IF there's a new engine, it will be a 392 or 6.4L (yeah, I know, same engine, but one's from the cars and one is from the HD trucks).
IF ZF was working on a 10 spd auto, we'd have heard about it by now. Same for if Ram was working on it's own in house design. If they didn't develop a 10 spd for the HDs, then there isn't going to be one for a specialty 1500, regardless of power. And they're definitely not going to redesign the center console on a handful of trucks to accommodate a completely new shifter design for a low production vehicle with a transmission that doesn't exist... The old DS trucks had the provision for a console shifter, as that's what they came with pre-2013.5, and is also what is in the REBEL TRX Concept vehicle.
I don't mean to rain on the parade and all, but that Instagram post just screams bs, flat out lies, and clickbait. Not to mention is shows the OLD TRX concept vehicle, never mind an actual DT based test mule or prototype.
5thgenrams.com
