I have an 85D currently at 9,000 miles. I have done one range charge at about 7k and got 275. All my charges work out percentage wise to 275 miles at full range (50%=138, 70%=193, etc.) My range increased shortly after I got the car when they did the refresh model. I think I got a small benefit (5 miles) in a software update right around that time. People talk about out of balance packs but I have not seen it. Either it is a myth, or the newer cars are not affected by it.
My only caveat is that the car has not yet seen temperatures below freezing. It has seen the rest of the spectrum, including a very hot summer.