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4h ago

Ethereum Sets December 3 Target for Fusaka Upgrade With Phased Blob Increases

Staged public tests and a $2 million bug-hunt underpin a PeerDAS-driven push to expand data capacity in carefully sequenced steps.

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Photo: Shubham Dhage/Unsplash
Ethereum sets date for fusaka mainnet fork to scale rollups

Overview

  • Developers plan October testnet rollouts on Holesky (Oct. 1), Sepolia (Oct. 14) and Hoodi (Oct. 28) before any mainnet activation.
  • Blob capacity will be raised through Blob Parameter Only forks, moving targets from 6/9 to 10/15 on Dec. 17 and to 14/21 on Jan. 7, 2026, avoiding client-side protocol changes.
  • The upgrade centers on PeerDAS (EIP-7594) and a bundle of roughly a dozen EIPs focused on scalability, node efficiency, and predictable blob pricing for data-heavy applications.
  • A four-week security contest on Sherlock, running Sept. 15 to Oct. 13 with up to $2 million in rewards and early-submission multipliers, seeks to surface vulnerabilities ahead of launch.
  • Recent devnet work flagged issues now being addressed, including Prysm performance under load and a fixed ckzg verification bug, with Devnet-6 and shadow forks planned to validate fixes.