Most of this work is occurring precisely so it can be made stable. If you are curious about the Rust 1.0 cycle, go here http://blog.rust-lang.org/2014/12/12/1.0

Most of this work is occurring precisely so it can be made stable. If you are curious about the Rust 1.0 cycle, go here http://blog.rust-lang.org/2014/12/12/1.0-Timeline.html http://blog.rust-lang.org/2014/12/12/1.0-Timeline.html The main reason that it's taking a while is they want to get it right. There are a number of breaking changes in the pipeline that they want to get finalised, to improve the language. After that, they still have plenty of features in mind for post 1.0, but these will be added as to not break 1.0 code.