Ethereum’s Glamsterdam Upgrade Goes Live on Sepolia Testnet

The Sepolia run is the last meaningful dress rehearsal before Glamsterdam touches real value, so its main function is to surface client and validator edge cases while failure is still cheap. The efficiency and scalability pitch matters most to teams whose economics depend on mainnet throughput, but the practical question is whether the upgrade's gains are large enough to shift activity back toward Ethereum rather than leaving it on the scaling layers that have absorbed demand. Whether Sepolia's stability holds through the remaining test window is the thing to watch.