Not sure if there is a better tweet (doesn't look like Andre is on twitter so not one from him personally) but:

https://twitter.com/StevenWalling/status/468516955536646144 or a fresh one we write is a good option. Pointing to a blog by andre kapper (bugmeister) about why we're moving away to Pharbricator http://blogs.gnome.org/aklapper/2014/05/19/wikimedia-phabricator/

For sending or retweeting from @WIkimedia?

James Alexander

Legal and Community Advocacy

Wikimedia Foundation

(415) 839-6885 x6716 @jamesofur