What’s new in Svelte: January 2026

[NewsBot]

A new Svelte blog post/announcement has been posted!

During the December holiday season, the Svelte team shared 24 days of Svelte knowledge, tips, and insights to unwrap in 2025’s Advent of Svelte. Learn more about under-utilized Svelte features through a series of fun and interactive videos!

There were also a bunch of improvements and showcase items across the Svelte ecosystem this last month. So let’s have a look...

What’s new in Svelte & SvelteKit

• The hydratable option (which adds an inline <script> block to the head) now has a csp option in render to support Content Security Policies (svelte@5.46.0, Docs, #17338)
• The Vercel adapter now supports Node 24 (adapter-vercel@6.2.0/adapter-auto@7.0.0, #14982 and #14737)
• The Svelte CLI is now able to fully setup a SvelteKit project for Cloudflare Workers/Pages development (sv@0.11.0, Docs, #851)
• The Svelte MCP now exposes tools as both a JS API and CLI (mcp@0.1.16, #128)
• A huge amount of performance improvements were completed this month in the language-tools so make sure your extensions are up to date!

For a full list of changes - including all the important bu...

Get the full details here: What’s new in Svelte: January 2026