Supabase has rolled out early access to its "Branching" feature, which allows developers to experiment with their Postgres database remotely using a preview branch. This feature is designed for safety and isolation, with each branch having its own set of API keys and passwords. Supabase Branching works seamlessly with Vercel's Preview deployments and provides a dashboard for managing changes to the preview branches. The feature uses Git provider integration, allowing developers to verify schema changes easily on existing seed data. Supabase is currently investigating features such as declarative config, automatic dashboard commits, extended seeding behavior, and copy-on-write systems.