Link, a developer tool for integrating institutions with apps, has released new analytics and customization features to improve its power and flexibility. The new onEvent callback provides real-time information on user actions during the Link flow, allowing developers to track what happens between callbacks. Additionally, users can now select multiple accounts to connect to an app from the SelectAccount view, and developers can customize the background overlay of Link on Desktop to ensure it's consistent with their app. These updates aim to provide more visibility into and control over user experiences with Link.