Ethereum’s 2026 Glamsterdam Upgrade: Amsterdam and Gloas to Deploy ePBS and ACLs for MEV Reduction

COINOTAG News reports on December 21 that, after the Fusaka upgrade and lower node costs, Ethereum developers have initiated Glamsterdam planning for a 2026 launch. The name reflects two concurrent upgrades across Ethereum’s core layers: the Execution Layer will implement the Amsterdam upgrade, while the Consensus Layer will deploy the Gloas upgrade. Central to Glamsterdam are the proposer-builder separation (ePBS) and block-level ACLs, designed to curb MEV manipulation and abuse, and improve block production fairness. The plan signals a security-driven shift to enhance efficiency for operators and users alike.

From a technical perspective, ePBS isolates proposer and builder roles to reduce cross-layer collusion, with ACLs enforcing permissioning without sacrificing throughput. The rollout prioritizes robust finality, reduced latency, and sustainable validator incentives. By targeting MEV risk mitigation within the dual-layer upgrade, Glamsterdam aims to bolster network resilience, preserve asset liquidity, and align Ethereum’s roadmap with broader decentralization objectives.