The latest Mesos release, 0.21.1 is now available for download. This release includes bug fixes that fixes a few performance issues and isolator cleanup, and also includes a few improvements around building mesos on OSX and the docker containerizer.
Full release notes are available in the release CHANGELOG.
Upgrading to 0.21.1 can be done seamlessly on a 0.21.0 cluster. If upgrading from an earlier version, please refer to the upgrades documentation.
Thanks to all the contributors for 0.21.1: Timothy Chen, Benjamin Mahler, Kapil Arya, Ryan Thomas, Jie Yu, Dario Rexin and Michael Park.