The Editing team has begun a design study of visual editing on the mobile website. New editors have trouble doing basic tasks on a smartphone, such as adding links to Wikipedia articles. You can read the report.
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You can choose to see edit conflicts in a two-column view. This is a beta feature. You can find it in your preferences. The interface for the two-column edit conflict will change. You can read more.
When you edit with the visual editor you can use the "Automatic" citation tab. This helps you generate citations. You will now be able to write plain text citations or the title of a journal article or a book in this tab. This will search the Crossref and WorldCat databases and add the top result. 
The new version of MediaWiki will be on test wikis and MediaWiki.org from 6 November. It will be on non-Wikipedia wikis and some Wikipedias from 7 November. It will be on all wikis from 8 November (calendar).
Latest tech news from the Wikimedia technical community. Please tell other users about these changes. Not all changes will affect you. Translations are available.
Some old mobile browsers can use the watchlist again. This has not worked for a while. These browsers are called grade C browsers. This helps for example Windows Phone 8.1 with Internet Explorer and Lumia 535 with Windows 10. 
You can choose to see edit conflicts in a two-column view. This is a beta feature. You can find it in your preferences. Users who use this view saw the edit conflict resolution page when they wanted to see a preview. This has been fixed. 
Changes later this week
The new version of MediaWiki will be on test wikis and MediaWiki.org from 13 November. It will be on non-Wikipedia wikis and some Wikipedias from 14 November. It will be on all wikis from 15 November (calendar).
You can use the content translation tool to translate articles. The developers are working on a new version. One of the changes will be a maintenance category. Articles where users add a lot of text from machine translation without changing it will be in that category. This is so the community can review it. The users will also have been warned before they publish the article that it has a lot of unchanged text from machine translations.