The Rust language project has announced the release of stable version 1.56.0 and the Rust 2021 edition.
We wrote about plans for the Rust 2021 Edition in May. Editions are a mechanism for opt-in changes that may otherwise pose backwards compatibility risk. See the edition guide for details on how this is achieved. This is a smaller edition, especially compared to 2018, but there are still some nice quality-of-life changes that require an edition opt-in to avoid breaking some corner cases in existing code.
See the detailed
release notes for 1.56.0 for lots more information on the release.