The 2.14.6, 2.13.12, and 2.12.20 releases for GitHub Enterprise are now available for download.
View the full release notes:
Review summary preview and text editing toolbar
The review summary text area for pull requests has been changed to include a preview tab as well as a text editing toolbar. This will give you more confidence in how your review will be displayed as well as quick access to various text editing tools such as saved replies and more.
On November 1, 2018 we will begin to validate request payloads more strictly.
Calls that previously returned a 2xx success code, may return a 422 Unprocessable Entity.