The Ethereum Foundation has requested that core developers postpone decisions regarding the Glamsterdam upgrade. This pause follows the discovery of four reports indicating that existing live smart contracts could break if the proposed changes are implemented.
The upgrade includes EIP-8037 and EIP-8038, which modify gas costs for storage and state operations. Specifically, EIP-8037 proposes increasing the cost of writing to a new storage slot from approximately 22,100 gas to 110,020 gas. These changes aim to manage state growth as the network plans to increase the gas limit from 60 million to 200 million.
Security concerns were highlighted on October 13, 2026, when ChainSecurity identified eight critical invariants at risk. Subsequent audits confirmed that deployed contracts could be affected. Consequently, the foundation issued its recommendation on November 6, 2026, to delay the Hoodi testnet fork, which was originally scheduled for October 26, 2026.
As of November 10, 2026, no new date for the testnet fork has been established. Ethlabs supports this delay, emphasizing the need for thorough audits of immutable contracts. The foundation is currently contacting affected teams to address potential vulnerabilities before proceeding with the upgrade.
