Apple's WWDC26 session introduces Retention Messaging in App Store Connect, a feature that lets developers display value proposition messages and offers to subscribers who are about to cancel. It supports three views: message only, message with image, or message with offer. Subscriptions using Retention Messaging see an average save rate increase of +1.4 points, with promotional offer messages achieving up to +5.5 points. The session also covers real-time Retention Messaging, a server-to-server API that lets developers dynamically choose which message or offer to show each customer in real time, including a switch plan option. A comparison between the two approaches is provided to help developers choose the right fit, and sandbox testing requirements are explained.