Nothing major for me, just a 9-minute departure change on ATL-SEA in late June. (which works out for the better for me)
Although I do have to say it's now the 3rd schedule change to this itinerary since I booked it in November to take advantage of the double MQM's out of SEA for west-coast flights. Change #2 left me with a negative connection time in MSP, which forced the routing change to ATL.