I just noticed this on the official arduino blog - Micropython Officially Becomes Part of the Arduino Ecosystem.
I've used OpenMV with my Potenta H7 and Nicla Vision, so it's nice to see that Arduino is going to support Micropython in their ecosystem.
They have a new IDE - Arduino Lab for MicroPython that provides a REPL interface to the boards.
Still experimental, but looks promising. I'm currently traveling, but I'll have to give this a try when I get home...