v2.8.3 svelte@5.57.0
sveltejs/svelteAug 25, 2026 → Aug 28, 20263 days between releases
What's New
Introduces new SSR exports and form control features (older notes are for SpacetimeDB)
New Features
- Exports server-side rendering utilities from svelte/server
- Adds has method to createContext
- Supports defaultValue on select elements
- Adds getOrInsert methods to SvelteMap
Improvements
- Optimizes caching for option and select value guards
Bug Fixes
- Fixes blocking of template store subscriptions on promise assignments
- Fixes route $derived teardown errors
- Fixes tracking of SvelteDate snapshots in reactions
- Fixes removal of svelte:head anchors on unmount
- Adds warning for undeclared shorthand event handlers
Upgrade Notes
The provided older release notes are for SpacetimeDB, not Svelte. This is a major version jump from v2 to v5, so review migration guides. New server-side rendering utilities are now exported from svelte/server.
The Two Releases
Release v2.8.3
Aug 25, 2026· 2 months ago
This release fixes a critical bug where scheduled functions were drifting in execution time due to being rescheduled from actual execution time instead of intended time.
Full release notessvelte@5.57.0
Aug 28, 2026· 2 months ago
This minor release introduces new exports for server-side rendering utilities, context management improvements, and form control enhancements, alongside a wide range of bug fixes and performance optimizations.
Full release notes