The licensing update will move Wikipedia from licensed under the GFDL to dual licensed under GFDL plus Creative Commons CC BY-SA 3.0.
As a part of this transition, any images licensed under the GFDL and meeting certain conditions described below may also be dual licensed. This will be accomplished in several waves. Initially, an announcement template will be added to each GFDL tag highlighting this change and linking to this page to explain the conditions. Following this, all existing GFDL images will be sorted both by bots and by humans to separate the ones we can relicense from the ones we can't. It is hoped that of the 200,000 GFDL images on Wikipedia, approximately 90–95% can be sorted by automated processes, though we will still need your help in evaluating the remainder.