Got a new case number from FCA last week for my truck's shifting problem. Took it into the dealer yesterday to have them delve further into the problem. At my appointment, the dealer performed a system diagnosis and found no faults. They also found no required software updates. They did set the transmission adaptive and ran a quicklearn. They then drove and found no shifting problems. I too have yet to experience any shifting problems, but haven't run it since yesterday's trip home from the dealer.
Also, they did recommend that I turn the shift dial slower (i.e., from P to R, or P to D) to allow the module to react. (Gotta admit that I have found myself kinda spinning it, or quickly moving it, from P to D.) If turning the dial slower does prove to resolve this problem, I'd suggest that FCA build some physical resistance into the dial, to prevent owner's from slapping it into gear too fast.