GitHub's project boards now offer enhanced functionality with the introduction of summary cards, which provide a comprehensive view of work without leaving the board. Users can reference issues or pull requests in notes, and these will appear as previewed cross-referenced links, displaying valuable context such as assignee, state, and labels. This feature helps track external dependencies more effectively by allowing users to add links in notes, which will either convert URLs into first-class cards if relevant to the project or display them as summary cards if not. This new feature is automatically applied to existing boards, requiring no additional action from users.