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Title:     fxhash - no longer maintained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Title:     paste - no longer maintained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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