A publicly visible timeline entry will be created on an issue or pull request if an Organization owner chooses to notify a user that they have been blocked. Timeline entries will include the organization name, the name of the blocked user, and the duration of the block.
For more information, see blocking a user in a comment.
When people on mobile devices want to submit a new issue to a repository which has multiple issue templates set up, they will now be directed to a responsive view of the template chooser.
Learn more about creating issue templates for your repository on GitHub