Just tagged release for 2.1.
Upgrading: be sure to read the release notes from 2.1b1, which outline steps you will need to take after upgrading from 2.0.x to 2.1. (If you previously used 2.1b1 or 2.1b2 you should already have done these steps).
See:
2.1 also incorporates a fix for Facebook’s recent shift to _POST rather than _GET, which flz discusses at the end of this thread.