That truck was "revealed" publicly, about 18 months ago. I don't follow the board as much as I used to, but I doubt the target market is the DIY-Overlander. These trucks will likely be bought by mining companies, tour operators, oil/gas companies, municipalities, defence contractors and Miami-based rappers with sideways, flat-bill hats. The MSRP, as given in the video linked above, is 140K+.
Having a gas engine has its advantages and disadvantages, but I don't see the NRR as a true MDT, even with upgraded axles and 41" tires. The engineering that must have gone into this simply cannot be comprehended by the layman. Presumably, that must be paid back in some way. I would be quite curious to see how well these are selling, or if they are, at all.
EDIT: As of the date of this post, the corporate website simply states, "Coming Soon".