Ethereum Will Launch Glamsterdam Upgrade on Sepolia Testnet
The network upgrade aims to increase L1 throughput via proposer-builder separation and refined access lists.
Updated on Oct. 5, 2026 in Artificial Intelligence
Live Poll
Will the upcoming Ethereum Glamsterdam upgrade effectively scale network capacity without compromising system stability?
Ethereum developers have scheduled the Glamsterdam upgrade for the Sepolia testnet on October 6, 2026. This technical update integrates changes across both the execution and consensus layers to scale network capacity.
Why it matters
The upgrade is designed to support greater layer-one throughput and improve overall execution capacity. These architectural changes represent a planned shift toward more efficient block processing and state management.
The Glamsterdam update introduces EIP-7732 to separate block proposers from builders and EIP-7928 for enforced block-level access lists. It also implements EIP-8037 and EIP-8038 to adjust state-access costs and increases the maximum contract size.
The players
Ethereum
A decentralized open-source blockchain network that supports smart contracts and decentralized applications via its execution and consensus layers.
The details
The upgrade combines Amsterdam execution layer modifications with Gloas consensus layer adjustments. It incorporates new stack-manipulation instructions alongside the proposer-builder separation (a mechanism that decouples block production from validation) to optimize network performance. Node operators must update both their execution and consensus layer clients to maintain network compatibility.
Timeline
October 6, 2026, 13:53:36 UTC: Glamsterdam upgrade activates on the Sepolia testnet.
The Tech Race
The Glamsterdam update follows the established Ethereum Improvement Proposal (EIP) process to roll out architectural changes. It marks a critical step in the network's roadmap to enhance scalability before deployment to the mainnet.
Non-staking node operators must manually update their execution and consensus layer clients to support the new upgrade. Users and developers should prepare for higher L1 throughput and updated state-access logic once the code reaches the mainnet.
The takeaway
Developers and node operators should monitor the Sepolia activation success to gauge the readiness of the network for the subsequent Hoodi testnet launch. The trajectory points toward increased L1 efficiency through structured proposer-builder separation.
What happens next
Following the Sepolia activation, the Glamsterdam upgrade is scheduled to launch on the Hoodi testnet, with a final mainnet deployment planned thereafter.
Further reading
For more on the current state of blockchain infrastructure, see Artificial Intelligence.
Live Poll
Will the upcoming Ethereum Glamsterdam upgrade effectively scale network capacity without compromising system stability?
