ESPHome 2026.6.4 is a follow-up to the recent 2026.6.0 major update. If you're updating from a pre-2026.6 version, set wifi.min_auth_mode: WPA before updating if you have ESP8266 devices on WPA-only/TKIP Wi-Fi, and review the upstream upgrade checklist if you use DSMR electricity_switch_position, Nextion dump_device_info, custom components, Home Assistant time zones, or advanced lambdas.
If you're already on ESPHome 2026.6.x, this update bumps Device Builder to 1.0.23, fixes RP2040 VSYS ADC handling, restores ES8388 DAC unmute behavior, improves MIPI SPI display handling, fixes a Bluetooth proxy compile warning, and drops oversized ESP-NOW frames to avoid buffer overflows.
Full release notes can be found at https://github.com/esphome/esphome/releases/tag/2026.6.4