The #Moodle X(cross)ref and Diff(rence)s site @ http://xref-diff.mukudu-dev.net has been updated including the Moodle 4.1. A few minor UI changes have been made including links to the release notes and the Moodle DB schema site by @marcusavgreen.
For budding developers, in other news, my company turns 10 years old this month so to celebrate we are offering FREE (but with strings) 3 month access to the 'Moodle Plugin Development By Example' course in return for your feedback. The feedback can be anonymous and you only need to commit to feedback on the whole course AND to start the course in the next few weeks. https://mukudu.podia.com/moodle-plugin-development-by-example?coupon=10THBIRTHDAYGIVEAWAY. If a course is not for you, the e-book "Introduction to Moodle 3.9+ Plugin Development" is on offer too see https://mukudu.net/publishing/m39plugindevelopment/index.php#birthdayoffer