Ethereum developers have warned users maintaining L1 contracts on the main network that as the upgrade of Glamsterdam planned for the fourth quarter of 2026 approaches, the risks require attention.
Glamstam upgrade details
The Ethereum Foundation stated that the Glamstam upgrade will implement Gas fee repricing by adopting EIP-8037 and EIP-8038. These proposals will change the cost structure of state creation and access in Ethereum smart contracts to more accurately reflect the actual computing effort required for each operation.
These changes are designed to match operating costs with the growing size and complexity of Ethereum's state. Since the Gas price adjustment was implemented during the Berlin fork in 2021, the size of the Ethereum status has expanded significantly.
The name Glamestead combines the previous Ethereum "Amsterdam" execution layer upgrade and the "Gloas" consensus layer upgrade, marking an important milestone in the network expansion roadmap. Following the Fusaka upgrade, Glamstam aims to lay the foundation for the next phase of Ethereum's expansion by improving the efficiency of block generation and verification and reorganizing the way the network processes transactions.
Small Dictionary: EIP-8037 and EIP-8038 are Ethereum improvement proposals that focus on updating the Gas fee table for certain state-related operations in Ethereum smart contracts, aiming to make transaction costs more accurately reflect the consumption of underlying computing resources.
Impact on L1 contracts
Although Ethereum developers do not expect widespread disruption, they warn that a small number of existing smart contracts may fail or degrade performance if updates are not made before the upgrade. The contracts at risk are those that rely on hard-coded Gas assumptions, and the new expense schedule will invalidate those assumptions.
Although most contracts are not affected by these changes, developers emphasize that "a small number of smart contracts rely on assumptions changed by the new fee schedule, and without preventive upgrades, these contracts may crash or degrade performance." To reduce risk, developers suggest that affected contract maintainers increase Gas limits as a simple solution. The Ethereum Foundation pointed out that it has begun to reach out to developers most affected by these changes.
Replay testing of historical transactions using new Gas pricing shows that only a few contracts rely on outdated estimates and require adjustment. The vast majority of contracts are expected to operate normally.
Expansion and performance goals
One of Glamsterdam's main technical goals is to further increase Ethereum's Gas upper limit. Repricing status operations based on EIP-8037 and EIP-8038 are considered critical to supporting approximately three-fold expansion of network infrastructure throughput.
According to the upgrade schedule: Berlin will be upgraded in 2021, and the main change will be the status Gas price update, with no direct increase in throughput;Fusaka upgrade is expected to be in 2025, as a prelude to the upgrade and expansion of the consensus layer, with a moderate increase in throughput; Glamestead upgrade is expected to be in 2026, adopting a new Gas fee table and focusing on expansion, and improving basic throughput by up to 3 times.
Ethereum core developers expect that matching Gas fees to the workload of operations in different states will help make it easier to increase the Gas cap, thereby promoting greater transaction volume and stronger network expansion capabilities. Ethereum's upcoming upgrade to Glamsterdam "aims to pave the way for next-generation expansion," combining improvements in the execution and consensus layers to significantly improve network performance.

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