Highlights from the All Core Developers Execution (ACDE) Call #220

Ethereum developers on All Core Developers Execution call #220 focused on progress toward the Fusaka upgrade, with Devnet-3 non-finality testing lessons shared and Devnet-5 introduced as the final proving ground before testnets. Participation in Devnet-3 initially rose to around 62% before dipping back into the low-50s. The STEEL Team announced that all code from ethereum/execution-spec-tests will be merged into ethereum/execution-specs in Q4 2025 in an initiative called The Weld. The call also discussed EIPs including EIP-7976, which proposes raising the calldata floor cost from 10 to 15 gas and would reduce maximum block size by about 33%.