In general, I feel that the new course will be useful for people who want to teach Rust. If you have a group of engineers and you want to teach them Rust, then this is a ready-to-go solution. You only need to spend some time getting familiar with the material and then you can start teaching it. I don't think there was such a resource before.
Based on my personal experience, I think it might also be helpful to have an even shorter version tailored to "Rust for C++ programmers", which I find to be useful because you can mostly just go "ok here's the syntax for basic things, here is how lifetimes work and what problems they solve, here are the replacements for things you are familiar with and why some operations are not available for them". In particular, this lets you skim over "What is the stack? What is the heap?" that many introductions will spend time on.
Yes, it's definitely important to tailor the training to the audience!
When I'm teaching the course, I start by asking people about their background — if it's primarily C/C++ people, then we can quickly page through the slides about the stack and the heap.
Apart from the Android specific additions I mean.