
What are the ten most cited sources on Wikipedia? Let’s ask the data.
A new dataset of fifteen million records documents source usage in Wikipedia by identifier and across languages.

You can now add automatically generated citations to millions of books on Wikipedia
Wikipedia editors can now draw on WorldCat, the world’s largest database of books, to generate citations on Wikipedia thanks to a collaboration between OCLC (Online Computer Library Center) and the Wikimedia Foundation's Wikipedia Library program.

Introducing the unique devices dataset: a new way to estimate reach on Wikimedia projects
With the unique devices dataset, we’ve been able to quantify the shift to mobile across all projects. In almost all Wikimedia projects, more than half of our unique devices are accessing content using the mobile sites.