I noticed this just a little, not anywhere near the extremes mentioned in this thread. However, when I was in for an oil change a couple of months ago, and the dealer did a couple of reflashes, I have not noticed it at all. It would be the 4-5 shift, going about 40mph and then letting off the accelerator just a little.... I'd see it about 1/2 mile before I got to work, in the same spot which was a slight uphill grade. After the reflash, I have not felt it again. And its been about three months now.
2015 Cherokee Trailhawk:
Granite Crystal, 3.2L V6, 8.4 Nav, black leather, sunroof, tow, tech, comfort/conv, no hood decal, 9 speakers, CD player, Maximum Care lifetime warranty, Mopar first aid kit, rear rubber cargo mat, Thule Aeroblade cross bars (black), Thule Rapid Aero feet, Kuat Vagabond X cargo basket, RRO rock rails with smooth covers, Mopar door sills, Raingler ceiling net, Raingler seat headrest handles, MFC aluminum lift kit, RRO winch bar and Warn M8000S winch, BFG T/A KO2s