tauri-runtime-v3.0.0-alpha.1
tauri-apps/tauritauri-runtime-v3.0.0-alpha.1Sep 21, 2026by github-actions[bot]
Upgrading?
AI Summary
The v3.0.0-alpha.1 release of the Tauri runtime, upgrading to tauri-utils v3.0.0-alpha.1 and making internal pointer types immutable on macOS and iOS to align with ObjC `Retained` handles.
Key Highlights
- Upgrade to tauri-utils@3.0.0-alpha.1
- Webview accessors and fields are now `*const c_void` instead of `*mut c_void` on macOS/iOS
- Error handling improvements for window creation errors
Breaking Changes
- The macOS and iOS platform webview accessors (`Webview::inner`, `Webview::controller`, `Webview::ns_window`, `Webview::view_controller`) and the fields of `IosWebviewHandle` are now `*const c_void` instead of `*mut c_void`.
- `tauri_runtime::Error::CreateWindow` now carries the underlying error (`Box<dyn std::error::Error + Send + Sync>`) instead of a string.
Full Release Notes
<details>
<summary><em><h4>Cargo Audit</h4></em></summary>
```
Fetching advisory database from `https://github.com/RustSec/advisory-db.git`
Loaded 1258 security advisories (from /home/runner/.cargo/advisory-db)
Updating crates.io index
Scanning Cargo.lock for vulnerabilities (1226 crate dependencies)
Crate: fxhash
Version: 0.2.1
Warning: unmaintained
Title: fxhash - no longer maintained
Date: 2025-09-05
ID: RUSTSEC-2025-0057
URL: https://rustsec.org/advisories/RUSTSEC-2025-0057
Crate: paste
Version: 1.0.15
Warning: unmaintained
Title: paste - no longer maintained
Date: 2024-10-07
ID: RUSTSEC-2024-0436
URL: https://rustsec.org/advisories/RUSTSEC-2024-0436
Crate: rustls-pemfile
Version: 2.2.0
Warning: unmaintained
Title: rustls-pemfile is unmaintained
Date: 2025-11-28
ID: RUSTSEC-2025-0134
URL: https://rustsec.org/advisories/RUSTSEC-2025-0134
Crate: rustybuzz
Version: 0.20.1
Warning: unmaintained
Title: `rustybuzz` is unmaintained
Date: 2026-07-11
ID: RUSTSEC-2026-0206
URL: https://rustsec.org/advisories/RUSTSEC-2026-0206
Crate: ttf-parser
Version: 0.25.1
Warning: unmaintained
Title: `ttf-parser` is unmaintained
Date: 2026-06-28
ID: RUSTSEC-2026-0192
URL: https://rustsec.org/advisories/RUSTSEC-2026-0192
warning: 5 allowed warnings found
```
</details>
## [3.0.0-alpha.1]
### What's Changed
- [`d42c0d62b`](https://www.github.com/tauri-apps/tauri/commit/d42c0d62ba18e741a449bfb507dc8dcd2a8ca4ee) Pull latest v2 changes.
### Dependencies
- Upgraded to `tauri-utils@3.0.0-alpha.1`
### Breaking Changes
- [`a540c11f0`](https://www.github.com/tauri-apps/tauri/commit/a540c11f01eb461d8da5af7c658b45238cd42695) ([#16040](https://www.github.com/tauri-apps/tauri/pull/16040)) The macOS and iOS platform webview accessors (`Webview::inner`, `Webview::controller`, `Webview::ns_window`, `Webview::view_controller`) and the fields of `IosWebviewHandle` are now `*const c_void` instead of `*mut c_void`, since the pointers are borrowed from ObjC `Retained` handles and must not be mutated through.
- [`4e03a1bb2`](https://www.github.com/tauri-apps/tauri/commit/4e03a1bb298d95526b4c97fde0a367cde9b544c2) ([#16043](https://www.github.com/tauri-apps/tauri/pull/16043)) `tauri_runtime::Error::CreateWindow` now carries the underlying error (`CreateWindow(Box<dyn std::error::Error + Send + Sync>)`), like `CreateWebview`.
<details>
<summary><em><h4>Cargo Publish</h4></em></summary>
```
Updating crates.io index
Packaging tauri-runtime v3.0.0-alpha.1 (/home/runner/work/tauri/tauri/crates/tauri-runtime)
Updating crates.io index
Packaged 17 files, 262.0KiB (60.1KiB compressed)
Verifying tauri-runtime v3.0.0-alpha.1 (/home/runner/work/tauri/tauri/crates/tauri-runtime)
Downloading crates ...
Downloaded raw-window-handle v0.6.2
Downloaded dpi v0.1.2
Downloaded cookie v0.18.2
Compiling time-macros v0.2.32
Compiling cookie v0.18.2
Compiling tauri-runtime v3.0.0-alpha.1 (/home/runner/work/tauri/tauri/target/package/tauri-runtime-3.0.0-alpha.1)
Compiling dpi v0.1.2
Compiling raw-window-handle v0.6.2
Compiling time v0.3.55
Compiling plist v1.10.1
Compiling tauri-utils v3.0.0-alpha.1
Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.86s
Uploading tauri-runtime v3.0.0-alpha.1 (/home/runner/work/tauri/tauri/crates/tauri-runtime)
Uploaded tauri-runtime v3.0.0-alpha.1 to registry `crates-io`
note: waiting for tauri-runtime v3.0.0-alpha.1 to be available at registry `crates-io`
help: you may press ctrl-c to skip waiting; the crate should be available shortly
Published tauri-runtime v3.0.0-alpha.1 at registry `crates-io`
```
</details>
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