The WordPress development team has released WordPress 4.7 Beta 4 with about 60 changes, including tweaks to Twenty Seventeen, custom CSS, and the REST API content endpoints.
WordPress 4.7 Beta 4 is still in development and should not be used in a production environment. Instead, use the use the WordPress Beta Tester plugin to install the beta on a test site (you’ll want “bleeding edge nightlies”). Or, you can download the beta here (zip).
WordPress 4.7 is scheduled for release on December 6.
If you come across any issues or think you’ve found a bug, please report it to the Alpha/Beta area of the support forums.