# WASI 0.3 Launched

DevFeed: [WASI 0.3 Launched](<https://devfeed.tech/articles/wasi-0-3-launched-15134.md>)

Original publisher: [Read original article](<https://bytecodealliance.org/articles/WASI-0.3>)

Author: \["Bailey Hayes", "Yosh Wuyts"\]

Published: 2026-06-11T00:00:00Z

Content type: release

Language: en

Sources: [Bytecode Alliance](<https://devfeed.tech/sources/bytecode-alliance.md>)

Topics: [WebAssembly](<https://devfeed.tech/topics/web-assembly.md>), [toolchain](<https://devfeed.tech/topics/toolchain.md>)

Tags: [async](<https://devfeed.tech/tags/async.md>), [component](<https://devfeed.tech/tags/component.md>), [components](<https://devfeed.tech/tags/components.md>), [native](<https://devfeed.tech/tags/native.md>), [support](<https://devfeed.tech/tags/support.md>), [toolchain](<https://devfeed.tech/tags/toolchain.md>), [wasi](<https://devfeed.tech/tags/wasi.md>), [webassembly](<https://devfeed.tech/tags/webassembly.md>)

## AI overview

WASI 0.3.0 has been ratified as a stable specification. It rebases WASI on the WebAssembly Component Model's native async primitives, making most changes from WASI 0.2 mechanical and simplifying interface signatures. Runtime and toolchain support is beginning to land.

## Source excerpt

WASI 0.3 is official, and async is now native to WebAssembly Components. The WASI Subgroup voted to ratify WASI 0.3.0, rebasing WASI onto the WebAssembly Component Model's async primitives. The 0.3.0 specification is now stable, and runtime and toolchain support is landing now.