It's taken some more time than I had hoped, partly because there were some troubles in the recognition of mobile and non-mobile browsers, but I now have some data on
http://www.mediawiki.org/wiki/Analytics/Pageviews/Mobile/Results. They contain the language and geographical distribution of visits to the mobile site, and the mobile devices that have been used. The non-mobile percentage is somewhat higher than I earlier said, whether that is caused by the old data being wrong (by counting many desktop Safari visits as Android), or it is a change since August, I do not know. Based on your later message, I will now go and do a check on exactly which non-mobile browsers and browser versions have been used.