Hello Project 2501,
I have never heard of the change logs. I would recommend contacting the Support Department at 1-800-821-2797 to speak with 2nd Level for assistance.
Where are the changelogs for the Dec 2021 Xerox driver update, and the printer service pack? (Phaser 6510)
This question keeps popping up - Xerox seems to be really bad about publishign changelogs along with their updates.