- On many wikis (group 1), the software to play videos and audio files on pages has now changed. The old player has been removed. Some audio players will become wider after this change. The new player has been a beta feature for over four years. 
Changes later this week
- The new version of MediaWiki will be on test wikis and MediaWiki.org from 26 April. It will be on non-Wikipedia wikis and some Wikipedias from 27 April. It will be on all wikis from 28 April (calendar).
- Some wikis will be in read-only for a few minutes because of a switch of their main database. It will be performed on 26 April at 07:00 UTC (targeted wikis).
- Some very old browsers and operating systems are no longer supported. Some things on the wikis might look weird or not work in very old browsers like Internet Explorer 9 or 10, Android 4, or Firefox 38 or older.