Ethereum is testing how much cheaper block space it can safely create
Ethereum has prepared to test a 200 million gas limit on Sepolia under the Glamsterdam upgrade, putting more than three times the networks previous block capacity through a public test before developers decide what could eventually work on mainnet. According to Prysm‘s Oct. 5 release notes, validator client version 7.2.1 has added Sepolia’s new gas limit schedule so validators automatically propose blocks using the 200 million setting once Glamsterdam activates. The upgrade is scheduled for Oct. 6 at 13:53:36 UTC. Prysm 7.2.0 supported the Sepolia fork but was released before the 200 million setting was added to Sepolias configuration. Validators using that version would default to 60 million gas after activation unless operators manually changed their proposer settings. Version 7.2.1 removes that extra step by adding the schedule directly to the client. Operators can still choose another limit through proposer settings, the keymanager API or Prysms suggested gas limit option. The timing matters for what developers are trying to measure on Sepolia. A mix of validators proposing blocks at 60 million and 200 million gas would give the network less consistent exposure to the larger blocks that Glamsterdam is designed to test. Ethereum is testing how much block space validators can handle Sepolias move from roughly









