Quick update:
Z9 paid and dev fee firmware is effectively complete. I'm running another test over night and need to get the license files together for paid users, plus write instructions, and get this post updated. It's 12:14AM Monday now, so I'll be able to release it this evening I'm hoping.
It is very likely that the mini variant will be released at the same time. I've got an image for the mini under test now as well.
Thank you,
Jason