The Arduino ESP32 release candidate version 3.0.0-RC3 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1.

This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6. ESP32-C2 support added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

For version migration, please check Migration Guide from v2.X to 3.X

Libraries updates

Networking

• fix(net): Add back the friend classes required for Ethernet.h to work by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/9635
• NetworkClientSecure - copyability improvements and _timeout shadowing fixed by @JAndrassy in https://github.com/espressif/arduino-esp32/pull/9632
• Add support for specifying a WPA2 EAP-TTLS phase 2 method to WiFi.begin by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/9639

USB

• feat(usb): Remove redundant absolute mouse support by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/9640

Peripherals updates

LEDC

• fix(ledc): Match channel number with groups by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/9638

HWCDC

• fix(cdc): Disable SOF interrupt and CDC reset on begin() by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/9628

UART

• Fixes log with NULL ptr by @SuGlider in https://github.com/espressif/arduino-esp32/pull/9637

Examples

• Zigbee examples update by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/9627

Documentation

• docs(lib-builder): Add docker image documentation by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/9621
• docs(c2): Add note about ESP32-C2 support to documentation by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/9629

CI & Testing

• ci(wokwi): Fix concurrency by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/9625

Full Changelog: https://github.com/espressif/arduino-esp32/compare/3.0.0-rc2...3.0.0-rc3

Thanks for your contribution! 🎉