Repository collaborator permissions are set to be introduced shortly, allowing users to assign read, write, or admin access to their repositories. In anticipation of this feature, an "Admin" tab has been added to each repository, and the extensive 'edit repository' page is being divided into sub-tabs for better organization. The Twitter hook feature remains available and has been relocated to its own dedicated tab. This announcement was made by Chris Wanstrath, also known as @defunkt.