This is the Anvil firmware for the Raspberry Pi Pico W. See https://anvil.works/pico for more information.
This release is based on MicroPython 1.21 (actually the pimoroni-pico variant), and adds the umqtt package.
Which firmware file should I download?
If you are starting from scratch, you should use the pico-w-anvil-v0.2.0-complete.uf2 firmware. This will overwrite the entire flash memory, and includes template boot.py and main.py files on the USB mass storage filesystem.
If you already have files in the filesystem on your Pico W, you should download and flash the pico-w-anvil-v0.2.0-firmware-only.uf2 firmware. This will **not ** overwrite files created in the filesystem of previous Anvil firmware releases.