The Ethereum Foundation instructed Hoodi node operators and validators to update execution and consensus client software to remove the October 26, 2026, activation.

From the articleEthereum Delays Glamsterdam Testnet Fork Over Gas Security Flaws - DecryptAlso in Ethereum Delays Oct 26 Glamsterdam Hoodi Upgrade Over Security Risks, Ethereum Glamsterdam Delay: ChainSecurity Flags 13 Contracts Where Failures Turn Permanent, Ethereum postpones Glamsterdam upgrade on Hoodi testnet over smart contract concerns, Ethereum's long-awaited Glamsterdam upgrade hits another roadblock as 13 security risks emerge