ESPHome warns people building firmware on Intel Macs that support will end with version 2027.6.0 or earlier. The notice appears on every run and in the Intel option on the installation page, giving those users a deadline for moving their build environment.
J. Nick Koston explains that required Python packages are dropping Intel macOS builds. ESPHome already holds some dependencies at older versions for those computers, but a security correction or incompatible change could make that approach impossible before June.