What are the key differences between the 2021 and 2022 Audi A4 models?

I've been looking at purchasing a 2021 or a 2022 Audi A4, but I'm not sure what the main changes are between the two models. Can someone provide a breakdown or comparison of the key differences?

According to Audi's official press release, the 2022 A4 will feature an updated infotainment system and refreshed exterior styling. It also comes standard with a 12-volt mild-hybrid system for improved fuel efficiency.

One major difference between the 2021 and 2022 A4 models is the inclusion of a new top-of-the-line trim level, the S line competition. This trim offers a sportier look and feel with a lowered suspension and upgraded brakes.