I hope there is an upgrade planned to CM4 compatible!!!
I want to know more.
Also, I would love to get a 104 key version of your keyboard.
I actually bought 120 of the smallest switches I could find to try and make a reduced size 104 key with real numeric keypad.
Some of us are still buying vintage stock 101 key PS2 IBM M keyboards for numeric inputs.
So your stock of little ketboard WILL move eventually.