jQuery is no longer dual licensed. jQuery projects are now only distributed under the MIT license, which is GPL compatible. The majority copyright is now held by jQuery Foundation as all team members have signed a Copyright Assignment Agreement. Non-team members are now required to sign a Contributor License Agreement, but they still retain copyright of their contributions, just as they did before. We have updated all projects to include an AUTHORS.txt file listing all contributors. You can read more about this in a recent blog post.
