I'll start the year off with this article about Haas:

https://www.bbc.com/sport/formula1/60260173

https://www.skysports.com/f1/news/12433/12524402/formula-1-in-2022-explaining-the-new-rules-and-car-changes-as-teams-prepare-for-first-launches

The key changes are:

  • A ground-effect floor. The 2022 car has two long underfloor tunnels which create a 'ground effect' - meaning there is more suction under the car to pull it to the tarmac, while also ensuring more of the downforce is generated from under the car. The concept was popular back in the 1970s and '80s in F1.
  • A simplified front wing and a sharp new rear wing. These not only look great, but the completely new parts on the 2022 cars have been designed to stop sending airflow outwards, narrowing it instead. The curved rear wing still has DRS, although it may be less impactful.
  • 18-inch tyres with wheel winglets. Another throwback addition, the bigger tyres are aesthetically pleasing while they should also improve the handling of the cars. The winglets have been added to help direct air away from the rear wing.