As per 528btc, Ethereum's latest upgrade, Fusaka, went live on the mainnet at epoch 411392 (around 21:50 UTC on Wednesday). The upgrade introduces multiple user experience and scalability improvements and marks the beginning of Ethereum's new biannual hard fork schedule. Fusaka is the 17th major Ethereum upgrade, launched about seven months after the May 2025 Pectra update. The Ethereum Foundation plans to accelerate the release of hard forks to twice a year. Fusaka includes nine Ethereum Improvement Proposals (EIPs) and four supporting EIPs, making it the largest EIP set to date. The main feature of Fusaka is PeerDAS (Peer Data Availability Sampling), introduced via EIP-7594, which allows validators to sample data segments rather than download entire blocks. This improvement benefits Layer 2 rollups by increasing data throughput without proportionally increasing node bandwidth. Fusaka also introduces a minimum base fee for blob transactions to stabilize L2 costs and ETH burn rates. Additional improvements include gas limit adjustments, native support for secp256r1 elliptic curve, and a new opcode for zero-knowledge efficiency. Unlike Pectra, Fusaka focuses on backend enhancements rather than major user-facing changes.
Ethereum's Fusaka Upgrade Launches, Marking Biannual Hard Fork Plan
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