Diffraction Limited has released the new version 6.21 of Cyanogen Imaging(R) MaxIm DL Pro as of today, January 16th, 2020.
The MaxIm DL Pro 6.21 Release notes are here:

In MaxIm, use the Help menu, and select Check For Updates.
It will take you to a web page to download the update.
Download then install it.

I usually recommend that people archive the installers, in case for some reason they need to reinstall a particular version.
This release has undergone an extensive beta, and customers (including some ACP users - thank you!) helped us improve the software.
Best wishes,
Colin Haig
Diffraction Limited