Dan Moren, on Six Colors, reports:

Boasting a new design with flexible ear tips, the AirPods Pro add the highly-anticipated Active Noise Cancellation feature to remove background noise and provide better sound.

I am happy that the AirPods Pro will not replace the base AirPods model, which I like precisely because it (1) does not fit inside the ear canal, and (2) lets outside noises in, which is great for safety and comfort.