Ethereum Foundation Seeks Glamsterdam Delay Over Gas Audits

The Ethereum Foundation has recommended that core developers hold off on finalizing the Glamsterdam upgrade until outside audits of two Ethereum Improvement Proposals covering gas-cost changes are completed and made public, according to Crypto Briefing. The guidance, issued on November 6, 2026, centers on a pair of proposals that would change how Ethereum prices the creation and modification of on-chain storage state.

Crypto Briefing reports that the proposals would raise the cost of writing to a new storage slot from roughly 22,100 gas to 110,020 gas, while also altering pricing for accessing and writing to existing state, including cold new-slot storage operations. The outlet said the foundation's recommendation followed four reports describing live contracts that could malfunction if the changes are implemented as written. Security firm ChainSecurity had earlier published a report on October 13 identifying eight critical invariants that the two proposals could disrupt in existing smart contracts.

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A related testnet fork, originally planned for October 26, 2026, was pushed back over these audit concerns, and Crypto Briefing reported that by November 10, 2026, a replacement date had still not been announced. The outlet also said a separate Ethereum research group backed the delay, arguing any Glamsterdam decision should wait for audit results clarifying risks to deployed contracts. Glamsterdam is described as a major scaling upgrade meant to raise Ethereum's base-layer gas limit from 60 million to 200 million, roughly a 3.3-times increase in base-layer capacity. The foundation said it is reviewing the four reports and contacting affected teams, though it has not named them. The audit timeline, their findings, and any new fork date remain unannounced.