We've been hard at work on Rust 2024. We're thrilled about how it has turned out. It's going to be the largest edition since Rust 2015. It has a great many improvements that make the language more consistent and ergonomic, that further our relentless commitment to safety, and that will open the door to long-awaited features such as gen blocks, let chains, and the never (!) type. For more on the changes, see the nightly Edition Guide.
As planned, we recently merged the feature-complete Rust 2024 edition to the release train for Rust 1.85. It has now entered nightly beta1.
You can help right now to make this edition a success by testing Rust 2024 on your own projects using nightly Rust. Migrating your projects to the new edition is straightforward and mostly automated. Here's how:
rustup update nightly.cargo +nightly fix --edition.Cargo.toml and change the edition field to say edition = "2024" and, if you have a rust-version specified, set rust-version = "1.85".cargo +nightly check to verify your project now works in the new edition.(More details on how to migrate can be found here and within each of the chapters describing the changes in Rust 2024.)
If you encounter any problems or see areas where we could make the experience better, tell us about it by filing an issue.
Rust 2024 will enter the beta channel on 2025-01-09, and will be released to stable Rust with Rust 1.85 on 2025-02-20.
That is, it's still in nightly (not in the beta channel), but the edition items are frozen in a way similar to it being in the beta channel, and as with any beta, we'd like wide testing. ↩
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