It specifically said a "QTII Transfer Case", since QDII has the same transfer case, logically it would also be covered. But yes, they could have been more clear, and I also would worry that they are only going to cover QTII and NOT QDII.
I don't "think" (meaning I could be wrong) the problem is a sluggish shift motor. What I read was a defect in the FDCM module. The defect could cause the FDCM to shift the XFR case into neutral at a random time, that lead to a few Commanders rolling down hills. I think the NHTSA got involved.
The N23 update was suppose to have a self-test to spot the defect and disable the FDCM before it could become a safety issue. Either the overwhelming majority of FDCM's were defective or the N23 update's new self-test to sensitive, cause it was resulting in an overwhelming majority of vehicles having their FDCM disabled shortly after doing the N23 udpate, meaning they could NOT shift into 4LOW or Neutral.
Perhaps the N73 update will have a better self-test that will finally identify if the FDCM really is defective or NOT. Thus if you have a good FDCM it won't be disabling the FDCM in the future when its NOT necessary. And, if your FDCM is actually defective it will identify it more positively and thus you can replace it and get a proper functioning vehicle. You would hope, if the FDCM is identified as defective, Chrysler would replace it for you free of charge, which might account for the talk about a new part?
Yes, one of the NV245's common problems was oil leaking past the seal at the shift motor and ruining shift motors that is an expensive repair. That does confuse the issue. Might want to check that motor on every oil change, and if you spot leaking oil, repair the seal right away before the motor is ruined by leaking oil, and avoid having to replace the motor with the seal.