GFX now builds again both rust-beta and nightly. This is not a breaking change, but users are encouraged to updated their applications to the new macros in order to become beta-compatible. gfx_macros will likely be deprecated.
We want to celebrate Rust-1.0 release by providing the new users with a solid basis for the graphics API abstraction. High-level rendering libraries are in the oven, will be presented on Rust Toronto meetup on May 20th.
Crate: https://crates.io/crates/gfx
Core PR: Macros return! by kvark · Pull Request #725 · gfx-rs/gfx · GitHub
Reddit thread: http://www.reddit.com/r/rust_gamedev/comments/35i9ii/gfx04_is_fully_compatible_with_rustbeta/