GitHub Enterprise Cloud customers with enterprise managed users (EMUs) can now make use of private wikis in EMU user-namespace repositories. These wikis can only be accessed by authorized users from the EMU enterprise, and cannot be made public.
Previously, all attached (drag-and-dropped) images and videos on GitHub Issues, Pull Requests, Discussions, and wikis were available to view without authentication if you knew their direct URL. Now, future attachments associated with private repositories can only be viewed after logging in. This doesn’t apply retroactively to existing attachments, which are obfuscated by having a long, unguessable URL.
Email notifications sent from private repositories will no longer display images; each image is replaced by a link to view it on the web. Content inside a Git repository is not affected by this change and has always required authentication for private repositories.
Earlier this year, GitHub added support for LaTeX style mathematical expressions and Mermaid diagrams in Markdown. However, until now, GitHub wikis were missing this support. You can now use these formatting features in GitHub wikis.