Around 21:30UTC automatic redirection to the mobile version of *. wikimedia.org sites hosted on the cluster (except for commons) was enabled with the deployment of https://gerrit.wikimedia.org/r/#/c/16000/. This is part of the ongoing effort by the mobile team to provide automatic redirection for mobile devices to the mobile version of all of our sites. For more information about the project and the timeline for enabling automatic redirection to the remaining projects, see http://www.mediawiki.org/wiki/Mobile_default_for_sibling_projects.
Please let us know if you see any issues. As always, feel free to join us on IRC in #wikimedia-mobile.