How To Use The New Arduino IDE 2.0
The Arduino IDE 2.0 has been in beta since early 2021 and, in those early days, we took it for a test drive and liked what we saw. When Arduino announced that 2.0 was moved to a stable release, we just had to take it out for another spin.
This new verson brings a number of improvements to the original IDE. Most notably a refreshed user interface. Here are a few more end user improvements.

The Arduino IDE 2.0 introduces code autocompletion, useful when typing in large sections of code. As we type, the IDE suggests possible keywords / commands that we can use. This feature has been a standard in many other IDEs, and is a welcome addition here.

If you like your code editors dark, then this new look has a plethora of themes to choose from.

Found in the File >> Preferences menu. Change the theme to your liking and every facet of the editor will accommodate your request.

Finally, the Serial Plotter has received an update and now it looks stunning. The serial plotter is useful to measure and interpret analog signals and voltages.
Under the hood, Arduino IDE 2.0 sees improved compilation time and in-app updates for our boards and software libraries. Talking of updates, it can also be updated from the app, saving us the trouble of downloading the latest version from the Arduino website.
Read More: How To Use The New Arduino IDE 2.0 | Tom’s Hardware