Absolutely.
Among others, you convinced us to implement a phased rollout.
From the 2.1 Release notes:
You should find the Z-Axis options in the “Ports and Laser” tab in the Device Settings:
On some controllers, the axis assignments are incorrect (only jogs down), and on the RC-6, the Home Direction Invert switch doesn’t always seem to work.
A new RC version will be released soon that fixes this.