Starting today, GitHub Packages (formerly GitHub Package Registry) is generally available. The use of GitHub Packages is free for all public repositories, and every plan gets included storage and data transfer for private repositories.
Code review assignment (beta)
Teams can now be configured to assign a specified number of reviewers when a team is requested for code review. When coupled with CODEOWNERS, organizations can now ensure that code is reviewed by the proper team and automate distribution of code reviews across team members. Code review assignment is available for all users who are members of an organization as public beta.