Everyone can now see Special:UserRights. Previously only those who could change user rights could. Other users got an error message. 
ORES can now show how likely an edit is to be damaging to the wiki with different colours. This only works for languages that have trained ORES to recognize damaging edits. 
Changes this week
You will now see categories with 0 pages in Special:Categories. Previously you did not see empty categories there. 
The new version of MediaWiki will be on test wikis and MediaWiki.org from 6 December. It will be on non-Wikipedia wikis and some Wikipedias from 7 December. It will be on all wikis from 8 December (calendar).
You can join the next meeting with the VisualEditor team. During the meeting, you can tell developers which bugs you think are the most important. The meeting will be on 6 December at 20:00 (UTC). See how to join.