Latest tech news from the Wikimedia technical community. Please tell other users about these changes. Not all changes will affect you. Translations are available.
The Wikipedia app for Android now invites users to add Wikidata descriptions to Wikidata objects that have Wikipedia articles but no Wikidata descriptions. It will only invite users who have added a number of Wikidata descriptions in the app without being reverted. This is to avoid spam and bad edits. 
Tech News was late last week because of a MassMessage bug. Other newsletters had the same problem. 
Changes later this week
You will see when you last refreshed the recent changes page. This is so you can see how recent the changes are. 
You will be able to turn off milestone notifications. Milestone notifications congratulate you when you have made certain numbers of edits. 
The new version of MediaWiki will be on test wikis and MediaWiki.org from 30 April. It will be on non-Wikipedia wikis and some Wikipedias from 1 May. It will be on all wikis from 2 May (calendar).
You can join the technical advice meeting on IRC. During the meeting, volunteer developers can ask for advice. The meeting will be on 1 May at 15:00 (UTC). See how to join.
The Wikidata wb_terms table will be dropped. This will affect some Wikidata tools. They need to be updated. The table has become too big which is causing problems. This will happen on 29 May. You can read more. You can ask for help if you need it.
Wikimedia wikis will soon use a token when you log out. This changes how the API works. Some tools might need to be updated. 
File descriptions for files from Commons were not shown properly on other Wikimedia wikis for a few days. For example the image descriptions and license information were missing. This has now been fixed. 
Some diffs show an error message when you try to see them. The developers are working on fixing it. It could be because of some edit comments. 
Changes later this week
The new version of MediaWiki will be on test wikis and MediaWiki.org from 21 May. It will be on non-Wikipedia wikis and some Wikipedias from 22 May. It will be on all wikis from 23 May (calendar).
You can join the technical advice meeting on IRC. During the meeting, volunteer developers can ask for advice. The meeting will be on 22 May at 15:00 (UTC). See how to join.
The content translation tool on Wikipedia can use machine translations. There is a system to stop translations where the editors do not fix machine translation mistakes. This warns or stops them if they seem to just copy what the machine translation gives them. If this system is too strict or not strict enough you can tell the language team. 
The Wikidata wbeditentityAPI endpoint will remove all aliases if the request includes an empty alias. This is how it supposed to work. It has not been working this way because of a bug. This will start on 12 June.