--- title: What's new in Astro - September 2026 | daily.dev description: A monthly roundup from the Astro team covering ecosystem news for September 2026: Astro 7.3 adds multiple preview servers, a runtime logger, and a finalize()... canonical: https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What's new in Astro - September 2026 | daily.dev og:description: A monthly roundup from the Astro team covering ecosystem news for September 2026: Astro 7.3 adds multiple preview servers, a runtime logger, and a finalize()... og:url: https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne og:image: https://api.daily.dev/og/posts/Mf0yYn1NE.png og:image:alt: What's new in Astro - September 2026 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # What's new in Astro - September 2026 **[Astro](https://daily.dev/sources/astro_source)** · 18 min read · 5 upvotes · 0 comments ## Summary A monthly roundup from the Astro team covering ecosystem news for September 2026: Astro 7.3 adds multiple preview servers, a runtime logger, and a finalize() helper for Cloudflare workers, while Starlight 0.42 brings performance and accessibility improvements. The digest also links community content, new integrations, themes, showcase sites, partner guides, and Starlight-powered documentation sites spotted in the wild. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What's new in Astro 7.3? Astro 7.3 adds the ability to run multiple preview servers at once, a runtime logger for custom image services and cache providers, and a finalize() helper for Cloudflare custom worker entrypoints. It is a minor release focused on developer experience improvements rather than breaking changes. _Developers tracking Astro's release cadence can follow version updates like this on daily.dev._ ### What changed in Starlight 0.42? Starlight 0.42 ships performance and accessibility improvements alongside JavaScript reductions in some areas and additions in others, described jokingly as 'less JavaScript, and more JavaScript, all in one release.' It targets documentation sites built on the Starlight theme for Astro. _Teams maintaining Astro-based docs sites can keep tabs on Starlight releases via daily.dev._ ## Similar posts on daily.dev - [What's new in Astro - June 2026](https://daily.dev/posts/what-s-new-in-astro---june-2026-sips7nqvt) · Astro · 48 upvotes · 0 comments - [What's new in Astro - August 2026](https://daily.dev/posts/what-s-new-in-astro---august-2026-c14k5plle) · Astro · 15 upvotes · 2 comments - [What's new in Astro - July 2026](https://daily.dev/posts/what-s-new-in-astro---july-2026-71nqabj2u) · Astro · 64 upvotes · 7 comments - [What's new in Astro - March 2026](https://daily.dev/posts/what-s-new-in-astro---march-2026-dwn7ifesu) · Astro · 26 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#astro](https://daily.dev/tags/astro) [View this post on daily.dev](https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"What's new in Astro - September 2026","url":"https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne"},"datePublished":"2026-09-30T12:27:18.009Z","dateModified":"2026-09-30T12:27:36.574Z","description":"A monthly roundup from the Astro team covering ecosystem news for September 2026: Astro 7.3 adds multiple preview servers, a runtime logger, and a finalize()...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/dc63a0f7fe5a2d89ce2c906d32268ec4?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/dc63a0f7fe5a2d89ce2c906d32268ec4?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Astro","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Astro","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/f4e5c78441f64e17b064585687d42fc6","url":"https://daily.dev/sources/astro_source"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":5},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"webdev,astro","timeRequired":"PT18M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Astro","item":"https://daily.dev/sources/astro_source"},{"@type":"ListItem","position":3,"name":"What's new in Astro - September 2026"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/what-s-new-in-astro---september-2026-mf0yyn1ne#faq","mainEntity":[{"@type":"Question","name":"What's new in Astro 7.3?","acceptedAnswer":{"@type":"Answer","text":"Astro 7.3 adds the ability to run multiple preview servers at once, a runtime logger for custom image services and cache providers, and a finalize() helper for Cloudflare custom worker entrypoints. 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