The developer preview version of Supabase Flutter SDK v1.0 is now available for download, offering improved developer experiences through several key updates including automatically handling auth state persistence and deep links, throwing errors instead of returning them, removing the need for `.execute()` to get data, and introducing desktop support for deeplinks. The update also includes plans for multiplayer support, a Supabase Auth UI library, and bug fixes across the entire library, made possible by contributions from the open source community.