Ethereum's Glamsterdam upgrade — described by developers as the network's most significant overhaul since the Merge — has entered its final development stage, according to reporting by Unchained Crypto. The milestone marks a concrete step toward deployment for an upgrade that has drawn outsized attention within the $ETH ecosystem.
What "Final Development Stage" Actually Means
Reaching the final development stage typically means core engineering work is substantially complete and the upgrade is moving toward testnet and client-team coordination. It does not mean a mainnet deployment date has been set or confirmed. For a protocol of Ethereum's complexity, the gap between final development and live deployment can be measured in months.
The Merge — Ethereum's 2022 transition from proof-of-work to proof-of-stake — remains the network's most referenced structural change, a benchmark against which subsequent upgrades are measured. Glamsterdam being characterized as bigger than any upgrade since that transition is a claim worth watching closely: the Merge eliminated miner rewards and restructured consensus entirely, a change with direct, measurable impact on $ETH issuance. Any upgrade compared favorably to that carries a high bar.
Who Is Making the Claim and What It Covers
The source does not attribute the "biggest since the Merge" characterization to a specific individual or organization by name, and it does not detail which Ethereum Improvement Proposals make up the Glamsterdam bundle, what technical changes are included, or how those changes are expected to affect fees, throughput, or staking mechanics.
What to Watch For
The useful questions here are not about price. They are: which client teams have signed off, what the testnet schedule looks like, and whether any contested EIPs remain in the bundle. Upgrade announcements at this stage routinely move markets before the technical details are fully stress-tested. The Merge itself was years in the making and slipped multiple projected timelines. Glamsterdam's arrival at the final development stage is a process checkpoint — not a ship date.