What does this mean for someone who is quite familiar with AVR but new to Rust? How much of what I can normally achieve in my AVR projects can now be done under Rust?
In theory, Rust can completely replace C for AVR development. Based on what shepmaster said, certain Rust features may not work yet. I'm also a Rust newbie. This article is a great intro to Rust for microcontrollers (but it's for ARM Cortex): https://interrupt.memfault.com/blog/zero-to-main-rust-1