Preview 3 of 4.11 is now available on the launcher and includes new features such as Metal on Mac, Anim Dynamics Skeletal Control for Animation Blueprints and particle DOF. Download it today to get a peek at what's in store in the upcoming production release.
To find the new Preview, head to the "Library" section of the Unreal Engine tab in the Epic Games Launcher, select "Add Versions", and choose 4.11 Preview 3. If you have an existing 4.11 Preview installed, you can hit the upgrade button instead.
Check out the update from Stephen Ellis on the Unreal Engine forums for more information on the fixes included in the release, and be sure to read up on the known issues list. Please remember, the Preview builds are for testing only, and should not be used for the active development of your project.
Happy Developing!