Upcoming there's also Vello[0][1] by Raph Levien, who has a bunch of experience w/ font rendering at Google. He's also working on a Rust UI library[2] and has a great talk on compute shaders[3].
0: https://www.youtube.com/watch?v=mmW_RbTyj8c
1: https://github.com/linebender/vello