This week, the GLAMWikiToolset, or GWToolset, is being deployed to the Wikimedia Commons. It allows for GLAM organizations to batch upload content based on various metadata stored in an XML schema. In the past this has been done by various bots, but now it will be easier for GLAMs to do it directly. Users will need to be added to the 'gwtoolset' user group by an administrator before they can use the extension. For testing purposes, it is recommended that you use the Labs instance. Currently each domain must be whitelisted by a sysadmin before uploading can begin, to prevent any accidental denial-of-service attacks.
The project is being led by David Haskiya; Dan Entous and Maarten Zeinstra are the senior developers, and Kippelboy is the GLAMwiki facilitator. The entire extension has been documented on mediawiki.org, including the technical design, the implementation, and the architecture.
More information about future plans can be found on the project page.