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Dev Tools Guild October 2026 update

· 5 min read
Andrew B Coathup
Andrew B Coathup
Guild Coordinator

TL;DR: Glamsterdam upgrade on Hoodi testnet postponed. Nethereum 7 full Ethereum SDK & node toolkit for .NET. Sourcify introduces Onay signing companion.

Dev Tools Guild members​

Smart Contract Languages​

Solidity​

  • Solidity 0.8.38: fixes low severity Yul optimizer knowledge base stale bookkeeping bug (affects 0.8.19 - 0.8.37). Faster Yul optimizer. Warns when swapn, dupn or exchange are used as identifiers in Yul or inline assembly, as they are new opcodes in the Amsterdam EVM version (EIP-8024).
  • Core Solidity status update: Core Solidity is a new solc frontend. It adds a new type system with algebraic data types, pattern matching, generics, traits and compile-time evaluation. Much of what is built into the compiler today gets moved into a standard library written in the language itself. Syntax reworked to be closer to Classic Solidity and uses composition instead of inheritance. Still a prototype and not ready for mainnet deployment. Try the playground.
  • Argot: ethdebug status update, open format for compilers to describe their output to debuggers, with experimental ethdebug output in solc.

Client Libraries​

alloy (Rust)​

  • evm2 is up to 2x faster than revm, built for custom EVMs and with clean extension boundaries. Reth v2.9.0 (execution layer client) replaced revm with evm2.

Nethereum (.NET)​

  • Nethereum 7.0.0: evolved into a full Ethereum SDK & node toolkit for .NET. Interact through JSON-RPC, embed the EVM, execute and simulate transactions and blocks, connect to Ethereum over DevP2P, verify through a beacon light client and follow mainnet.

viem (TypeScript)​

Web3j (Java)​

  • Web3j v6.1.0: adds CappedDynamicEIP1559GasProvider with a max fee cap, fixes nested dynamic arrays (string[][]) and maxPriorityFeePerGas exceeding maxFeePerGas, plus ABI decoding performance improvements.

Frameworks and Dev Environments​

Ape Framework​

  • Ape v0.8.53: fixes custom error revert decoding, adds opt-in autosign for raw message hashes and inject_poa_middleware option for custom networks.

Foundry​

  • Foundry v1.8.4: durable script recovery, native Base execution, external compiler adapters, integrated editor clients, expanded block-access-list tooling, substantial correctness and performance improvements.
  • Foundry v1.8.5 - v1.8.7: patch releases, fixes Anvil mining for ready transactions left in the pool after a full block, dependency security fixes and compile cache regressions.

Scaffold-ETH​

  • BuidlGuidl Learning Lab live: learn Ethereum basics, write Solidity and deploy contracts in your browser with an AI tutor. First labs: Ethereum 101, Wallets & Crowdfunding.

Standardisation Tooling​

Sourcify​

  • Sourcify server v4.1.2 - v4.2.0: serves the OpenAPI spec, uses the Blockscout PRO API for creation transaction fetching and verification.
  • Onay (prototype): second factor when signing transactions. View only (holds no keys), independently fetches & verifies transaction details using a local light client, Sourcify verified source, ERC-7730 clear signing and local simulation.
  • Sourcify new look: one lookup box for verified contracts, 4byte selectors and ERC-7730 clear signing.
  • Mainnet DAI now an exact match on Sourcify, after recovering the 2019 build paths.

Ethereum Layer 1​

Glamsterdam upgrade​

Hegotá upgrade (target 2027)​

Ethereum Foundation​

Support Dev Tools Guild members by donating to donate.devtoolsguild.eth on mainnet, Arbitrum, Base and Optimism. Donations of all sizes are greatly appreciated.