Expo Router v56 is the most architecturally significant release the project has shipped. The framework now maintains its own navigation implementation rather than layering on React Navigation, which means existing apps that mix the two will need to audit those integration points before upgrading. Streaming SSR lands in the same release, letting server-rendered routes begin delivering content before the full response is ready. The platform-parity story also moves forward: a new Android toolbar and Native Tabs updates close some long-standing gaps between the Android and iOS experiences. Tkacz and Khan frame this as closing the platform gap — which is accurate, though the harder migration story is the navigation fork, not the toolbar.