None that I can see. It downloaded quickly and for me, it installed on only four attempts in flight mode, with DND and the CoDi off. The resources appears to be the same as in 1.1.1.15 so it only flashed the actual firmware.
I do notice that I can get an on-CoDi kind-of keyboard to quickly jump to a particular letter in my contacts, rather than being forced to scroll all the way. Not sure how long that has been there, as I rarely make phone calls from the CoDi, or at all, for that matter.
Personally, I just hope newer CoDi firmwares will crash less often.