Plans for #CircuitPython2025, to incorporate an RTOS (Zephyr) have benefits: e.g. supporting multiple cores, BLE stacks, and high-performance processors.

Please don't make a clean break! Keep a version of #CircruitPython, as up-to-date as possible, that is still capable of running on the existing chips, even on the SAMD21. It will lack many of the new features, but will still be useful for existing tasks.

Thanks for the open community of Python and microcontrollers, #Adafruit