Readers of this list may be interested to know that in the new MSC2020 subject classification, section 18, category theory and homological algebra, has had some significant changes. You can find the full list here https://zbmath.org/classification/ Personally, I think it reflects the current state of our subject rather better than the previous version, and I?m grateful to everyone who was involved. No doubt it will continue to evolve in the future. Steve Lack. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]