Issue #307 of the jetc.dev newsletter covers Compose Multiplatform 1.10.3 patch release, Jetpack Media3 updates, and a range of community articles. Highlights include six approaches to drawing glowing borders in Jetpack Compose, a 34% startup performance improvement using StrictMode, and an exploration of the RememberObserver API. New open-source resources include Compose Hot Swan (hot reload for Android devices), a Material3 side sheet for Compose Multiplatform, a pinch-to-resize grid, and a Storybook-style component catalog powered by KSP. Additional links cover layout selection, state hoisting, loading states, UI testing, and more.