Firmware 5.0
So I just noticed that v5 firmware was silently released with some huge changes, notably:
“Samples can be played back while recording audio” !!!!!!! Also lazy chopping in the sample editor!
Holy crap this is a huge update, thank you Tim!
Changelog
https://github.com/Dirtywave/M8Firmware/blob/main/changelog.txt
Main firmware page along with updated manual.