Hello and welcome to the latest installment of the Deployment Highlights email.

The full calendar for next week lives at: https://wikitech.wikimedia.org/wiki/Deployments#Week_of_May_20th

For the week of May 6th we have the following interesting deployments:

== All Week ==

* Due to a security update to the Linux kernel, we will be upgrading and rebooting ALL machines throughout the week. This may affect your experience with some services, but it should be minimal.

== Monday ==

* VisualEditor will be deploy a new extension, TemplateData, to all Wikipedias (https://bugzilla.wikimedia.org/show_bug.cgi?id=44444) in addition to a VisualEditor configuration change on mediawiki.org (https://bugzilla.wikimedia.org/show_bug.cgi?id=48430).

* English Wikipedia will be updated to MediaWiki version 1.22wmf4, in addition to a WikiData client update on English Wikipedia. See https://www.mediawiki.org/wiki/MediaWiki_1.22/Roadmap

* An update to HTCP purging will be rolled out by the WMF Operations team which might create momentary issues with some thumbnails. Please report any issues you experience.

== Wednesday ==

* The rest of the Wikipedias will be updated to MediaWiki 1.22wmf4, thus completing the roll out of that version. The next version, 1.22wmf5, will start on Monday May 27th. See https://www.mediawiki.org/wiki/MediaWiki_1.22/Roadmap

== Thursday ==

* The Editor Engagement team (E2) will rollout bugfixes to Notifications (Echo). See http://etherpad.wikimedia.org/echo-release.

Best,

Greg