I did find it worth noting that they clarified as experienced software developers. For places with a wider gamut of experience levels, the ramp-up time could remain an issue, which is a fear I have when talking with my own team at work about Rust when many have trouble with Java coming from JavaScript-only.
For me, the biggest excitement is around "Easier Implicit Returns for undefined-Returning Functions". It's nice not to have to insert a return undefined; when that's the implicit behavior.
I did find it worth noting that they clarified as experienced software developers. For places with a wider gamut of experience levels, the ramp-up time could remain an issue, which is a fear I have when talking with my own team at work about Rust when many have trouble with Java coming from JavaScript-only.