# What's new in Svelte: December 2021

DevFeed: [What's new in Svelte: December 2021](<https://devfeed.tech/articles/what-s-new-in-svelte-december-2021-3069.md>)

Original publisher: [Read original article](<https://svelte.dev/blog/whats-new-in-svelte-december-2021>)

Author: Dani Sandoval

Published: 2021-12-01T00:00:00Z

Content type: article

Language: en

Sources: [Svelte blog](<https://devfeed.tech/sources/svelte-blog.md>)

Topics: [Svelte](<https://devfeed.tech/topics/svelte.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Content Management System](<https://devfeed.tech/topics/cms.md>), [Vercel](<https://devfeed.tech/topics/vercel.md>), [WordPress](<https://devfeed.tech/topics/wordpress.md>), [Front end](<https://devfeed.tech/topics/frontend.md>), [User Experience](<https://devfeed.tech/topics/user-experience.md>)

Tags: [cms](<https://devfeed.tech/tags/cms.md>), [community](<https://devfeed.tech/tags/community.md>), [frontend](<https://devfeed.tech/tags/frontend.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [newsletter](<https://devfeed.tech/tags/newsletter.md>), [recap](<https://devfeed.tech/tags/recap.md>), [svelte](<https://devfeed.tech/tags/svelte.md>), [vercel](<https://devfeed.tech/tags/vercel.md>), [wordpress](<https://devfeed.tech/tags/wordpress.md>)

## AI overview

This December 2021 Svelte newsletter recaps Svelte Summit Fall 2021 and briefly notes recent SvelteKit bug-fix activity. It covers Svelte's history and maintainership, JavaScript learning, reactivity, the Primo SvelteKit CMS, accessibility, custom stores, WordPress integration, islands architecture, migration from React, community initiatives, and SvelteKit library development.

## Source excerpt

With SvelteKit getting more and more stable each day, there's not much to cover in terms of code changes other than bug fixes... So, in this month's newsletter, we'll be covering Svelte Summit Fall 2021! If you want to dive deep into the last month's worth of bug fixes, check out the Svelte and SvelteKit changelogs, respectively. What happened at Svelte Summit? If you missed Svelte Summit, you can watch the entire live stream on YouTube and catch a recap in the #svelte-summit channel on Discord. Here are the highlights: Rich Harris took us through a tour of Svelte's history and announced his move to Vercel - where he will be helping maintain Svelte full-time! (20:00) Steph Dietz explained how Svelte's simple abstractions makes it easy for beginners and experts alike to learn and use JavaScript - without the boilerplate (29:00) Kevin Bridges dove deep into Svelte's reactivity logic by visualizing it through ReflectiveCounter and showing how to "fine tune" it, as needed. A full "syllabus" for the presentation is available on Kevin's site. (42:55) Mateo Morris launched Primo, an all-in-one SvelteKit CMS to help build and manage static sites (1:12:34) Guillermo Rauch explained Vercel's commitment to Svelte, what it means to have Rich on the team, and what's coming next from the company... (1:21:54) Geoff Rich introduced various ways to modify motion and transitions within Svelte to be more accessible to all users of the web. Slides and a full transcription of the talk are available on Geoff's site. (1:32:30) Dean Fogarty demoed a number of different use-cases for custom stores - transforming data to and from storage mechanisms within Svelte. Transcript and code is available on Dean's GitHub. (1:43:06) Kellen Mace shared how we can let content creators keep using WordPress, while leveraging Svelte on the frontend to provide a phenomenal user experience (1:49:30) Ben Holmes explained the "islands" architecture and how 11ty + Slinkity can bring these islands to any HTML te