The Rust 2018 edition isn't bells and whistles, but usability improvements.
For example, many users were confused by Rust's module system, because modules behaved differently than in other languages. The 2018 edition added the "missing" features to the module system to meet expectations that new users have.
The end result is that Rust 2018 is easier to learn.
easier to learn as of now.. but look below ( or other rust threads) and see how people that want to jump into rust ( from c++ for example) always ask about X feature missing and when is going to be added...
C++ has fucked up expectations people have from language evolution. Don't project C++'s mistakes on Rust.
For Rust the evolution is users asking "Why is doing X so hard?" and the Rust team saying "OK, we'll see how we can make X easier".
Rust has been adding features for 30 releases now, and every new release has been easier to use and easier to learn.
For example, many users were confused by Rust's module system, because modules behaved differently than in other languages. The 2018 edition added the "missing" features to the module system to meet expectations that new users have.
The end result is that Rust 2018 is easier to learn.