Ethereum warns tools may break as Glamsterdam fork nears Aug 20

The Ethereum Foundation warned that wallets, indexers and gas estimators relying on a fixed maximum gas limit will break under the Glamsterdam upgrade's new gas model.

Any tool assuming a hardcoded maximum gas limit "will break" and must be updated, the foundation's Protocol DevOps team said, urging developers to test on Platåberget, a public testnet that launched Aug. 13 per upgrade tracker Forkcast.

Under EIP-8037, a separate state-gas dimension applies to operations that create new state. A plain ETH transfer to an existing account still costs 21,000 gas, while sending ETH to a new account incurs an additional state-gas charge. The foundation said developers should revisit software that assumes 21,000 gas covers every transfer or uses only one gas dimension when estimating transaction costs. EIP-2780 and EIP-8038 handle the decomposed costs across the two dimensions.

The Glamsterdam fork activates on Platåberget on Aug. 20 before deployment on the Sepolia and Hoodi testnets, giving developers a window to update tooling ahead of mainnet. The upgrade also enshrines proposer-builder separation (EIP-7732), adds block-level access lists (EIP-7928) and raises contract-size limits, laying groundwork to lift gas limits from 60 million toward 200 million.

State-Gas Dimension Reshapes Cost Assumptions

About 88 percent of Ethereum blocks are assembled off-chain through MEV-Boost relays, according to staking provider Everstake, leaving validators without protocol-level contingencies when relays censor transactions or fail to deliver. EIP-7732 replaces that setup with on-chain builder identities, signed bids and a new payload-timeliness committee. EIP-7928 records every account and storage slot a block touches, along with the resulting state, giving the network a shared view of what each block accesses.

Testnet Window Before Mainnet

Platåberget launched in mainnet's current state, so operators can simulate the transition on an active chain rather than joining one already running the new rules. The upgrade will increase the maximum deployed contract size from 24 KiB to 64 KiB and the initcode cap from 48 KiB to 128 KiB. After community feedback and client-software aggregation, expected to take about a month, Glamsterdam moves to Sepolia and Hoodi before mainnet.

The warning lands as Ethereum developers scope the next upgrade, Hegotá, due in 2027, with 66 proposals on the table including Frame Transactions (EIP-8141) and Keyed Nonces (EIP-8250). Only one change, the censorship-related FOCIL, has been approved so far. For teams running infrastructure on Ethereum, the gas-model shift is the first of several structural changes that will require tooling updates over the next year, and the testnet window is the only place to catch breakage before mainnet.

This article is for informational purposes only and does not constitute investment advice.