As mentioned in the OP, Rust really hasn't added any language-level features since 1.0, but looking forward there were two major features whose RFCs were accepted this cycle: impl specialization (https://github.com/rust-lang/rfcs/pull/1210#issuecomment-187...) and the `?` operator (https://github.com/rust-lang/rfcs/pull/243#issuecomment-1805...). The former will keep code from having to pay a de facto performance penalty for being generic (preliminary implementation at https://github.com/rust-lang/rust/pull/30652), and the latter is purely an ergonomic change to make our `Result`-based error handling more lightweight (preliminary implementation at https://github.com/rust-lang/rust/pull/31954).

I'm personally hoping the latter one manages to get into the beta release for the next cycle, so that I can use `?` rather than `try!()` for my Rust tutorial at OSCON this year. :)