The ArbOS 40 upgrade on Arbitrum includes a fix to the Stylus VM that resolves cache lookup issues related to non-existent contracts, enhancing Rust-based development and improving tooling consistency under the Ethereum Pectra upgrade

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A Stylus VM fix also improves Rust-based development by resolving cache lookup issues. The Ethereum Pectra Upgrade ensures improved tooling for all builders.
ArbOS 40 also includes a fix to the Stylus VM’s handling of non-existent contracts in cache lookups.