GitHub Enterprise 2.6 introduces several new features and enhancements aimed at improving team workflows and communication, based on community feedback. This release offers tools like Issue templates and pre-receive hooks to streamline development processes, as well as options for more flexible code reviews, including the ability to filter changes by commit and squash merge commits for a cleaner history. It enhances communication by allowing drag-and-drop file uploads, emoji reactions, canned replies, and a text formatting toolbar for easier styling of comments without markdown. Administrators can also set custom messages for developers and suspended users on sign-in pages. Overall, GitHub Enterprise 2.6 aims to provide a more efficient, customizable, and user-friendly experience for development teams.