If you are using a recent version of the IDE, you will get an auto-update offer simply by starting the IDE.
Otherwise, the release is available for download here:
https://www.arduino.cc/en/software
This was a small patch release we made to distribute an important bug fix.
Thanks so much to the forum community for all the valuable testing and feedback that has helped us greatly in the Arduino IDE development work!
Fix UNO R4 WiFi upload failure
arduino/arduino-ide#2121, arduino/arduino-cli#2234, arduino/ArduinoCore-renesas#10
Previously, uploads to the new UNO R4 WiFi board failed on Windows with a "No device found ..." error.
Full changelog here:
https://github.com/arduino/arduino-ide/releases/tag/2.1.1
If you have any questions or feedback please post here in Arduino IDE 2.x's dedicated forum category:
https://forum.arduino.cc/c/software/arduino-ide-2-0-beta/93
If you want to see the list of known issues, work in progress, submit a formal report, or contribute to development, the IDE 2.x source code is hosted in this public repository: