Ethereum’s Glamsterdam upgrade enters final development phase ahead of a second-half 2026 launch

Ethereum has often moved ahead of major network upgrades, with anticipation itself driving market attention. That dynamic is resurfacing as the next upgrade approaches. Ethereum’s Glamsterdam upgrade has entered its final development phase ahead of testnet deployment, with a mainnet launch expected in the second half of 2026, according to CoinMarketCap.