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 12 January at 20:00 (UTC). See how to join.
URLs in the recent changes IRC feed will no longer be rewritten to unencrypted HTTP. This could be a breaking change for bots dependent on the IRC feed. 
The edit tabs for the wikitext editor and the visual editor will be combined to one single edit tab. You will be able to choose which one you prefer. If you are not logged in, your choice will be saved as a cookie in your browser. You can test the single edit tab. 
There is a beta feature that adds links to the subject on other Wikimedia projects. This works much like the links to for example Wikipedia articles in other languages. It will go out of beta testing and be enabled for everyone in January. Wikis that don't want this can decide to have it disabled. 
The difference between "alerts" and "messages" notifications is unclear to some. The developers want feedback at the Phabricator task or on MediaWiki.org so they can make this better. You can give feedback in your language if you can't write in English.