Remix stable V2 Dev Server Great news! 1.18.0 officially stabilizes the "New Dev Server" complete with HMR/HDR 🎉 If you've previously opted into the unstable_dev version, you'll need to update your remix.config.js flag name from future.unstable_dev -> future.v2_dev in 1.18.0. If you've not yet opted in, we now consider the new dev server stable (no more API changes) so feel free to upgrade anytime to make your eventual migration to v2 smoother! You can read up on the new dev server in the docs.