Mux has introduced a changelog to document changes made to its products from December 1, 2021 onwards. The changelog aims to make product changes transparent and easily accessible for users. Key features of the changelog include discoverability through search and filter options, easy readability with minimal jargon, a streamlined internal process for submitting items, availability as an RSS feed, and trackable analytics. Mux's changelog is hosted in its Docs site to improve accessibility and discoverability. The company encourages feedback on the changelog at [email protected] to continually improve the developer experience.