Care to explain the difference between these and the current transfer cases?
The 02-19 use an electronically or manually selectable transfer case that changes the mode with a fork and collar to connect or disconnect together the front and rear axles via the chain.
If that transfer case is a beefed up version of the ones I'm thinking it is, it is probably a modified magna 3023/3024 active case the half ton silverado and 3/4 ton suburbans use. It connects the front and rear axles together via an actuator and clutch pack to engage the chain; with those you're able to bias the power sent to the front wheels and eliminate crows-hop/bind associated with turning while in 4x4.
Basically, they'll have it tied into the steering wheel position sensor, the stability control system, brake status, speed, wheel slip, wheel speed, throttle %, gear and probably a few other sensors to intelligently control how much pressure to apply to the clutch packs. It's a nifty system, and probably one of my favorite GM systems (so much so, I modified a half-ton system to work with my LBZ with 1000+ ft lbs and probably have 60k miles on that- and I love every bit of it!).
This will easily be my favor part of the truck if this is the case, and I bet it is robust as hell to survive with 910Ft Lbs, 30K+ towing and what I am betting is a low gear in 1st in that 10 speed (granted, it'll take data from tons of sensors to prevent user abuse and damage.)