The mid-2015 model (which I still use and think is way better) is over 3 years old now. It was always bound to be discontinued eventually. There are still some

The mid-2015 model (which I still use and think is way better) is over 3 years old now. It was always bound to be discontinued eventually. There are still some available in the Apple Store under the clearance section (https://www.apple.com/shop/browse/home/specialdeals/clearance/mac https://www.apple.com/shop/browse/home/specialdeals/clearanc...). Definitely your last chance to get this model new from Apple.