• added: Add RouterExt::typed_connect (#2961)
• added: Add json! for easy construction of JSON responses (#2962)

Note: there are further relevant changes in axum-core's changelog.

• breaking: Require Sync for all handlers and services added to Router and MethodRouter (#2473)
• breaking: The tuple and tuple_struct Path extractor deserializers now check that the number of parameters matches the tuple length exactly (#2931)
• breaking: Upgrade matchit to 0.8, changing the path parameter syntax from /:single and /*many to /{single} and /{*many}; the old syntax produces a panic to avoid silent change in behavior (#2645)
• change: Update minimum rust version to 1.75 (#2943)

• breaking: Update code generation for axum-core 0.5.0-alpha.1
• change: Update minimum rust version to 1.75 (#2943)

• breaking: Update to prost 0.13. Used for the Protobuf extractor (#2829)
• change: Update minimum rust version to 1.75 (#2943)

• breaking: Replace #[async_trait] with return-position impl Trait in traits (#2308)
• change: Update minimum rust version to 1.75 (#2943)

• change: Remove manual tables of content from the documentation, since
  rustdoc now generates tables of content in the sidebar (#2921)

• fixed: Compile errors from the internal __log_rejection macro under
  certain Cargo feature combinations between axum crates (#2933)

• change: Avoid cloning Arc during deserialization of Path
• added: axum::serve::Serve::tcp_nodelay and axum::serve::WithGracefulShutdown::tcp_nodelay (#2653)
• added: Router::has_routes function (#2790)
• change: Update tokio-tungstenite to 0.23 (#2841)
• added: Serve::local_addr and WithGracefulShutdown::local_addr functions (#2881)

• added: Add #[debug_middleware] (#1993, #2725)

• added: The response::Attachment type (#2789)