The Rust-Lightning v0.1.11 release, titled 'CI Matters', addresses a critical bug that affected the Minimum Supported Rust Version (MSRV) in the previous version 0.1.10. This update ensures that the 'lightning' crate is once again compatible with rustc 1.63, resolving the issue documented in pull request #4737. This release is part of ongoing efforts to maintain and improve the Rust-Lightning library, which is crucial for developers working with the Lightning Network.