GitHub Enterprise Server 3.3 is now available, offering performance improvements for CI/CD and large repositories, along with a variety of new features to enhance collaboration and communication. Noteworthy updates include easier self-hosted runner auto-scaling, expiration dates for Personal Access Tokens to improve security, enhanced scanning capabilities for identifying sensitive information, and visual enhancements like a dark mode high contrast theme. The release also introduces a new security manager role to manage alerts and settings, a repository cache to reduce latency for geographically-distributed teams, and the extension of Dependabot Security Updates to the platform. Additionally, the server's operating system is upgraded to Debian 10, and users can explore three new beta programs or use the Upgrade Assistant to transition to this version, while newcomers can start with a free trial.