Summary & Key Takeaways ​

• SvelteKit 3 is now in Release Candidate, with a stable release expected soon.
• Breaking changes include moving configuration from svelte.config.js to vite.config.ts.
• The $lib alias for src/lib is now #lib to align with modern project practices.
• A migration tool, npx sv@next migrate sveltekit-3, is available to automate updates.
• The full list of changes and migration guide are on next.svelte.dev.

Our Commentary ​

This is a big one for Svelte developers. Moving config to vite.config.ts makes so much sense; it always felt a bit disjointed having two config files. The $lib to #lib change is also a good move for consistency. We're excited to see the stable release soon.