Ethereum’s largest-ever upgrade, “Glamsterdam,” enters final development phase, expected to launch in H2
According to CoinDesk, Ethereum core developers have entered the final development phase of the Glamsterdam upgrade and are currently running development networks (devnets) that incorporate all planned Ethereum Improvement Proposals (EIPs); once complete, the upgrade will advance to public testnets. Parithosh Jayanthi, a core developer at the Ethereum Foundation, stated that Glamsterdam “could be the largest fork upgrade since the Merge,” fundamentally altering many foundational assumptions of Ethereum and laying the groundwork for large-scale future scaling. It is expected to go live in the second half of 2026, though the exact date remains undetermined.
Key components of this upgrade include:
First, embedded Proposer-Builder Separation (ePBS, EIP-7732), which moves off-chain block building and proposing processes on-chain to reduce MEV-related manipulation risks and centralization concerns;
Second, block-level access lists (EIP-7928), enabling blocks to pre-declare accounts and smart contract data they need to access, thereby improving block execution efficiency and predictability;
Third, broad gas fee repricing—costs for high-compute operations will decrease while state storage costs will increase—to more accurately reflect resource consumption and ensure compatibility with zero-knowledge proof-based scaling solutions.
Currently, the development team is focused on testing, finalizing specifications, and community communication.
