--- title: Swift 6.3 Released | daily.dev description: Swift 6.3 has been officially released with several notable improvements. Key highlights include a new @c attribute for exposing Swift functions and enums to C... canonical: https://daily.dev/posts/swift-6-3-released-vmwqx05pw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Swift 6.3 Released | daily.dev og:description: Swift 6.3 has been officially released with several notable improvements. Key highlights include a new @c attribute for exposing Swift functions and enums to C... og:url: https://daily.dev/posts/swift-6-3-released-vmwqx05pw og:image: https://api.daily.dev/og/posts/vmwQX05PW.png og:image:alt: Swift 6.3 Released 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. # Swift 6.3 Released **[Hacker News](https://daily.dev/sources/hn)** · 7 min read · 0 upvotes · 0 comments ## Summary Swift 6.3 has been officially released with several notable improvements. Key highlights include a new @c attribute for exposing Swift functions and enums to C code, module name selectors for disambiguating APIs from multiple imported modules, and new performance control attributes for library authors (@specialize, @inline(always), @export(implementation)). The release also previews Swift Build integrated into Swift Package Manager for a unified cross-platform build engine. Swift Testing gains warning-level issues, test cancellation, and image attachments. DocC receives experimental Markdown output, per-page static HTML, and code block annotations. Embedded Swift sees broad improvements in C interoperability and debugging. Most significantly, Swift 6.3 ships the first official Swift SDK for Android, enabling native Android development in Swift and integration with existing Kotlin/Java apps via Swift Java and Swift Java JNI Core. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#android](https://daily.dev/tags/android), [#swift](https://daily.dev/tags/swift) [View this post on daily.dev](https://daily.dev/posts/swift-6-3-released-vmwqx05pw) ```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":"Swift 6.3 Released","url":"https://daily.dev/posts/swift-6-3-released-vmwqx05pw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/swift-6-3-released-vmwqx05pw"},"datePublished":"2026-03-26T11:13:40.759Z","dateModified":"2026-03-26T11:14:28.388Z","description":"Swift 6.3 has been officially released with several notable improvements. Key highlights include a new @c attribute for exposing Swift functions and enums to C...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/783d54e22675b2140433ee2f02129303?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/783d54e22675b2140433ee2f02129303?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hacker News","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":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/swift-6-3-released-vmwqx05pw","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"android,swift","timeRequired":"PT7M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Swift 6.3 Released"}]} ```