player.mux.com, the iframe player Mux hosts for every playback ID, now plays videos with Video.js. Your embed codes and URLs stay the same, and most embeds need no changes.
Some rarely used Mux Player parameters are deprecated or ignored. Mux Data reports these views with a new player_software_name, so update any dashboard or alert that filters on it. To keep an embed on Mux Player, add player=mux-player to its URL.