There is a new suggestion for what to show when someone edits without registering an account. This is to give unregistered editors better privacy and make some anti-vandalism work go faster. You can give feedback.
Pywikibot is a Python library to automate work on wikis. It will no longer support Python 2. Use the python2 tag if you need to continue running Python 2 scripts. The Pywikibot team strongly recommends to migrate to Python 3. You can get help to do so. 
The weekly MediaWiki branch cut will soon become automated. The timing for this cut may change. You can discuss in Phabricator if this affects you. 
You can read about coming technical events and mentoring interns.