Rust hold interesting promise for data analysis and visualization at scale, especially as someone who hits use cases where Python/R start to bottleneck. The ecosystem is not there yet, though.
Rust is nice when you want something lightweight and fast, since Julia has a pretty heavyweight runtime.
We're expecting more benefits down the pipe as well with better AOT compilation support so you don't have to redo compilation so much between sessions.
Compilation and precompilation latency have been the two most consistent focuses of the developer team over the past couple years.
I also imagine future iterations will focus on AOT options as well (we already have some in the form of PackageCompiler.jl),