# version.TmuxVersion.release

- **Module:** version.TmuxVersion
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/version.rs#L395
- **Page:** https://libtmux.org/en/rs/latest/reference/version-tmuxversion-release/

```
version.TmuxVersion.release(self) -> Option<&ReleaseVersion>
```

Return the numbered release, or `None` for a development identifier.

## Example

```rust
use libtmux::TmuxVersion;

let release = TmuxVersion::parse_output(b"tmux 3.7\n")?;
let development = TmuxVersion::parse_output(b"tmux master\n")?;
assert_eq!(release.release().map(|value| value.major()), Some(3));
assert_eq!(development.release(), None);
```