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2026-10-20latest coverage
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Firmware & Software
Arduino-ESP32 4.0.0-RC1 moves the Arduino core to ESP-IDF v6.1, Zigbee SDK 2.0 and ESP Matter 1.6
Espressif's Arduino-ESP32 4.0.0-RC1, a pre-release dated Sept 23, 2026, rebases the Arduino core on ESP-IDF v6.1 with esp-zigbee-sdk v2.0, ESP Matter 1.6, a Bluetooth refactor and multi-rate USB audio. 3.3.12 remains the stable release.
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Firmware & Software
Arduino Nano Matter gains Zigbee 3.0 support in Silicon Labs Arduino core 5.0.0
Version 5.0.0 of the Arduino core for Silicon Labs, released on 15 September, adds a Zigbee 3.0 library for the Nano Matter and three other MG24-based boards, with Router and End device roles, 14 examples and Home Assistant coordinator support.
