I've just published/updated the taproot-assets Rust crates.
https://crates.io/search?q=taproot-assets
https://github.com/ffranr/taproot-assets-rs
These crates serve as a Rust foundation for Taproot Assets integrations: shared protocol types, core proof verification logic (no_std), a gRPC client for tapd, a high-level SDK, and ZK-focused verifier/core crates.