Ethereum's Glamsterdam fork reprices gas on Sepolia Oct. 6 to prepare for higher L1 gas limits

The most useful fact in the design is what the Ethereum Foundation chose not to do. Raising the gas limit by itself would accelerate state growth and add to the hardware burden on validators ^[11]. Glamsterdam goes after the costs underneath the limit instead. Gas accounting and pricing change to better reflect execution and state-growth costs ^[7]. Block-level access lists record the accounts and storage locations each block uses ^[6], so clients can process state reads and validation more efficiently ^[5]. The access lists are aimed at the limits in sequential execution that higher transaction demand exposed ^[9]. Enshrined proposer-builder separation takes the other complaint, the centralization and MEV concerns that came from relying on specialized block builders ^[10].

For anyone weighing base-layer capacity against layer-2 networks, Glamsterdam is preparation for a later step. The foundation calls it groundwork for higher layer-1 capacity ^[1], and Crypto Briefing says it provides the infrastructure for a next stage that includes higher gas limits and greater parallelism ^[12]. Neither report includes a gas-limit or throughput target. Rollups keep their place in the plan, with continued work on rollup data availability and interoperability on the longer-term roadmap alongside statelessness and Verkle trees ^[13]. Further out, Vitalik Buterin said Sunday that Hegota could be the network's last "normal" fork before development shifts toward recursive STARKs, automated formal verification, optimized consensus and quantum-safe cryptography ^[18].

ETH gained 14% over the past two weeks as crypto and other risk assets rallied ^[16]. Whatever share of that gain traders credit to Glamsterdam is a bet on an upgrade with no mainnet date ^[14]. Crypto Briefing wrote that rising Treasury yields are making the backdrop tougher and could keep gains volatile ^[17].

Sepolia can run clean, Hoodi and mainnet get dates, and gas-limit increases follow as their own step. The testnet can instead turn up problems that push mainnet toward Hegota, the next fork, which developers are targeting for 2027 ^[15]. If that target holds, Glamsterdam still has to reach mainnet first ^[1]. Or, in the version that costs builders most, the new pricing breaks enough contracts built on fixed gas stipends or hardcoded gas limits ^[8] that fixing them sets the schedule.

I think the first money this fork moves is contract teams' audit spending, or rather the engineering hours behind it, well before it moves anyone's fee bill. The counter-case belongs to Parithosh Jayanthi, an Ethereum Foundation core developer, who told CoinDesk the fork would likely be the largest since the Merge and could change key assumptions about the network ^[3]. His case beats mine if the mainnet date arrives with a stated gas-limit increase attached.