If I were a gambler I'd wager it would be coupled with tow or a stand-alone "heavy duty" package or those two would be one package together. Many people like the air suspension but have no need for locking diff or tow package.
I wouldn't ascribe to Land Rover any intelligence until I see it with my own eyes.
I've been eyeing the L405 FFRR. It's available with a rear locker, but only in the supercharged v8 variant. The supercharged v8 variant comes with 22" wheels, and, apparently, dealers are telling people that you can't run any smaller. (Purportedly, some have fit 20" wheels, though).
It just doesn't make sense.