Rust 1.0–1.5 as of 2015

Currently issuing regular releases every six weeks with a train-based release model. Some highlights for Rust 1.0 to 1.5:

• 1.0 (May, 2015): 1.0 release of Rust. Introduced cargo and crates.io six months ago
• 1.1 (June, 2015): 32% improvement in compilation time over 1.0
• 1.2 (Aug, 2015): Enabled parallel codegen, resulting in 33% speedup in compilation time on a 4-core machine
• 1.3 (Sep, 2015): Efficient substring matching algorithm, efficient zero filling, efficienct PartialEq
• 1.4 (Oct, 2015): Both \n and \r\n as a valid line-ending.
• 1.5 (Dec, 2015): Introduced cargo install

For more details, see below or the official Rust blog

Rust 1.0

Rust 1.1

• new std::fs APIs — File System
• musl support — http://musl.libc.org/
• cargo rustc to build Cargo packages

Rust 1.2

• faster no-op builds
• reduced build-time by caching dependencies across multiple pacakages
• add supports for MSVC (Microsoft Visual C)
• complete the DST (dynamically-sized type) work, allowing smart pointers like Rc

Rust 1.3

Rust 1.4

Rust 1.5