In brief
- Ethereum’s Fusaka upgrade in Q4 2025 brings data scaling, DoS defenses, and dev tools.
- PeerDAS will boost blob throughput 8× by sampling data instead of full storage on every node.
- New EIPs set blob fees, cap block sizes, and add features like preconfirmations and P-256 support.
The next major upgrade for the Ethereum network is on the horizon. Called Fusaka—short for “Fulu-Osaka”—the release is scheduled for Q4 2025 and will combine significant changes in both Ethereum’s execution and consensus layers.
Fusaka follows several milestones for the Ethereum network following The Merge in 2022. Shanghai/Shapella in 2023 introduced staked ETH withdrawals, Dencun in 2024 added proto-danksharding and blobs, and Pectra in 2025 brought validator flexibility and
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Author: Jason Nelson
