The Ethereum Foundation has warned developers that the upcoming Glamsterdam upgrade could break some wallets, indexers and gas estimators. Its Protocol DevOps team said tools that rely on a hardcoded maximum gas limit will fail unless they are updated. Developers were urged to test on Plataberget first, a public testnet that launched on Aug. 13 and is expected to run for several months.
According to upgrade tracker Forkcast, Glamsterdam is scheduled to activate on the network on Thursday before reaching the Sepolia and Hoodi testnets. The foundation said EIP-8037 will add a separate state-gas dimension for operations that create new state. A plain ETH transfer to an existing account would still cost 21,000 gas, while sending ETH to a new account would carry an additional state-gas charge.
The foundation also said developers should revisit software that assumes every ETH transfer costs 21,000 gas or uses only one gas dimension to estimate transaction fees. Glamsterdam also includes enshrined proposer-builder separation, block-level access lists and higher limits for contract and initialization-code sizes.
Ethereum Foundation warns some tools may break under Glamsterdam
The Ethereum Foundation has warned that the upcoming Glamsterdam upgrade could break some wallets, indexers and gas estimators as it changes Ethereum’s gas model.
On Monday, the foundation’s Protocol DevOps team said any tool that relies on a hardcoded maximum gas limit “will break” and needs to be updated. Developers were urged to test their systems on Plataberget, a public testnet meant to run for several months.
Upgrade tracker Forkcast says Plataberget launched on Aug. 13. Glamsterdam is scheduled to activate on Thursday, before rolling out to the Sepolia and Hoodi testnets.
EIP-8037 adds a separate state-gas dimension
According to the Protocol DevOps team, EIP-8037 will introduce a separate state-gas dimension for operations that create new state. A plain ETH transfer to an existing account will still cost 21,000 gas. Sending ETH to a new account will add a separate state-gas charge.
The foundation said developers should review software that assumes 21,000 gas covers every ETH transfer or estimates costs using only one gas dimension.
Other changes included in Glamsterdam
Glamsterdam also includes enshrined proposer-builder separation, block-level access lists, and higher limits for contract and initialization-code sizes.
Related: Ethereum Foundation hits ‘Glamsterdam’ milestones, names new protocol leads
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