The RevisionSlider beta feature can now be tested on mediawiki.org, German Wikipedia, Arabic Wikipedia and Hebrew Wikipedia.
Renamed users on some wikis were not connected to their account on other wikis between 20 July and 21 July. This has been fixed. 
Changes this week
The new version of MediaWiki will be on test wikis and MediaWiki.org from 2 August. It will be on non-Wikipedia wikis and some Wikipedias from 3 August. It will be on all wikis from 4 August (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 2 August at 19:00 (UTC). See how to join.