Glamsterdam: Ethereum's Biggest Upgrade Since The Merge, Introducing ePBS, BALs, and Gas Repricing

Glamsterdam: A New Chapter for Ethereum's Performance and Decentralization

Glamsterdam is poised to be the most significant upgrade to Ethereum since The Merge, scheduled for deployment in the second half of 2026. The upgrade centers on three major technical innovations: embedded PBS (ePBS) to eliminate reliance on block relays and enhance decentralization; Block-Level Access Lists (BALs) to support parallel execution and efficient synchronization, promising substantial throughput improvements; and a re-pricing of Gas to more accurately reflect computational and state storage costs, aiming to stabilize transaction fees. Together, these changes are designed to boost mainnet performance, improve fee predictability, and preserve the network's decentralized ethos.