Ethereum developers and the Ethereum Foundation have warned that gas repricings in the Glamsterdam upgrade—EIP-8037 on state creation and EIP-8038 on storage and account access—could disrupt a small set of Layer 1 smart contracts that hardcode gas assumptions. Most contracts stayed unaffected in historical transaction replays; many flagged failures are fixed by raising gas limits, while contracts using 2,300-gas stipends via transfer or send, fixed call limits, gasleft() logic, or presigned fixed limits face the highest risk. Wallets, RPC providers, indexers, and tools using eth_estimateGas must refresh estimators, including the long-standing 21,000-gas ordinary-transfer assumption when a transfer creates a new account. Maintainers can test on the Platåberget (glam-devnet-8) network and use Ethereum’s checker before public testnets on Sepolia and Hoodi; Glamsterdam is targeted for Q4 2026 without a fixed mainnet date, as a step toward roughly 3x base throughput after the 2021 Berlin state-price adjustment.