To save some clicks:
> Currently, Zed only supports macOS.
That was actually from June of last year. It makes sense to start with a limited scope, but given that it's reaching public beta without much consideration for platforms outside of macOS, I wonder if it will ever actually feel "native" elsewhere, or if it will wind up ossified with Apple-specific idiosyncrasies. Time will tell.
Personally, I was mostly interested in their Rust GPUI library, but it hasn't been open sourced. (Yet; it does look like there is a plan to open source some of Zed, though obviously it's possible it never happens.) It sounded like a great idea and even in an early stage would probably be a great addition to the nascent ecosystem of Rust UI libraries.