Ethereum’s Glamsterdam Hits the Devnet Stage With Its Full Upgrade Bundle

Ethereum’s Glamsterdam Hits the Devnet Stage With Its Full Upgrade Bundle


Ethereum-themed background for a story about the Glamsterdam protocol upgrade. image By Isaac • June 16, 2026 2:19 pm •

Ethereum’s next major protocol upgrade just moved from roadmap talk into real code on test networks.

Developers have entered the final development phase of Glamsterdam, with devnets now running the planned set of upgrades before public testnets.

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Ethereum ranked second by market capitalization during the June 16, 2026 CoinGecko selection check, behind Bitcoin and ahead of Tether, BNB, XRP, USDC, Solana, TRON, Figure Heloc, and Hyperliquid. That makes any major change to its base protocol broad infrastructure news for the whole market.

NEW: Ethereum developers have entered the final development phase of Glamsterdam, described as “the largest fork since the Merge” with devnets now running all planned upgrades ahead of public testnet deployment. pic.twitter.com/69Hr7RQEU6

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