There's still work being done on the Reference, which is being maintained in the same way as it has been since the Rust documentation team was disbanded in 2020. But it's a very long way from being either complete or correct enough to reliably answer questions about Rust-the-language.

After the "write a new spec" plan was abandoned in 2024 the next stated plan was to turn the Reference into the spec, though they never got as far as deciding how that was going to work. That plan lasted six months before they changed direction again. The only practical effect was to add the paragraph identifiers like [destructors.scope.nesting.function-body].

They're currently arguing about whether to write something from scratch or somehow convert the FLS[1] into a spec.

[1]: https://github.com/rust-lang/fls