[Plain Language Guide] Ethereum Fusaka Upgrade Guide The Ethereum Fusaka upgrade will go live on the Holesky testnet on October 1, 2025, marking a new era of blockchain scalability.
Its core innovation PeerDAS (EIP-7594) securely scales blob throughput through data availability sampling, avoiding full data downloads by nodes, significantly reducing rollup costs and enhancing user experience. From the introduction of blobs in the Dencun upgrade to the gradual capacity increases in Fusaka (such as the BPO fork), Ethereum is gradually addressing congestion bottlenecks. Meanwhile, it optimizes gas rules, cryptographic tools, and developer experience, supporting access keys and zk efficiency.
After the testnet rollout, the mainnet is expected to activate in December, bringing a cheaper and more reliable L2 ecosystem to millions of users.
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From Dencun to Fusaka: Ethereum's Next Leap
[Plain Language Guide] Ethereum Fusaka Upgrade Guide The Ethereum Fusaka upgrade will go live on the Holesky testnet on October 1, 2025, marking a new era of blockchain scalability.
Its core innovation PeerDAS (EIP-7594) securely scales blob throughput through data availability sampling, avoiding full data downloads by nodes, significantly reducing rollup costs and enhancing user experience. From the introduction of blobs in the Dencun upgrade to the gradual capacity increases in Fusaka (such as the BPO fork), Ethereum is gradually addressing congestion bottlenecks. Meanwhile, it optimizes gas rules, cryptographic tools, and developer experience, supporting access keys and zk efficiency.
After the testnet rollout, the mainnet is expected to activate in December, bringing a cheaper and more reliable L2 ecosystem to millions of users.
For details, please see: