Ethereum’s Glamsterdam upgrade launches on Sepolia testnet
Reported by Cointelegraph · AI-assisted summary by ChikoCorp AI News Desk
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Summary
Ethereum’s Glamsterdam upgrade has launched on the Sepolia testnet, marking one of the final major rehearsals before its mainnet activation. The upgrade introduces enshrined proposer-builder separation (ePBS), block-level access lists (BALs), and changes to gas pricing to better reflect execution costs. Following Sepolia, developers will test Glamsterdam on the Hoodi testnet before deciding on the mainnet activation date.
Why it matters
The source states that Glamsterdam is designed to enhance Ethereum’s layer-1 scalability and efficiency, potentially enabling higher throughput and larger block sizes without raising the gas limit. This upgrade is described as one of the most consequential Ethereum network upgrades for 2026. The source does not provide further elaboration on market or policy impact.
Key context
Glamsterdam follows the Fusaka upgrade and aims to improve scalability and network usability by separating block proposers from builders (EIP-7732) and using enforced block-level access lists (EIP-7928) for parallel state validation. Currently, Ethereum processes transactions in a single-lane mode, and Glamsterdam’s changes support parallel processing to increase transaction throughput. The upgrade also sets a 200 million gas limit floor, increasing from the prior 60 million.
Key numbers and entities
Key entities include the Ethereum Foundation and community contributor Pooja Ranjan. The upgrade includes EIP-7732 (enshrined proposer-builder separation) and EIP-7928 (block-level access lists). The gas limit floor is raised to 200 million gas from around 60 million. The next anticipated upgrade after Glamsterdam is called Hegotá.
What remains unclear
The source does not specify the exact mainnet activation date for Glamsterdam or the full timeline for subsequent testing phases. It also does not detail how users or applications will be affected in practice or the broader market implications of the upgrade. Information about any risks or challenges during the rollout is not provided.