Some people were getting around 2 miles with pre-release models. It looks like DJI is very conservative in what they claim with the range. Personally I live in a valley with a lot of houses and trees so I don't plan on testing the max range any time soon.
I tested it in a suburban area surrounded by trees and averaged 1700 to 2000 feet, which I think is pretty good for what I considered to be pretty bad conditions. Much better than range than what I got flying my P2 + in the same area. Hoping to test it in more rural areas during the weekend. Overall I'm very impressed with the P3 and the DJI Pilot App..