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Ethereum Sets Dec. 3 Fusaka Upgrade, Activating PeerDAS

PeerDAS data sampling aims to expand blob capacity to compress rollup fees.

Overview

  • Mainnet activation is set for slot 13,164,544, expected at approximately 21:49 UTC on December 3.
  • Developers finalized the schedule on ACDC call #168 after the Hoodi testnet run completed without issues.
  • PeerDAS (EIP-7594) lets validators sample blob data instead of downloading it in full, reducing bandwidth needs and enabling greater L2 throughput.
  • The bundle includes BPOs to tune blob capacity (EIP-7892), a blob base-fee floor (EIP-7918), passkey support via secp256r1 (EIP-7951), and deterministic proposer look-ahead for faster pre-confirmations (EIP-7917).
  • Reporting cites modeling that points to roughly 15–40% typical rollup fee cuts, with up to 60% in some supply-heavy scenarios, while observers note ongoing decentralization concerns about reliance on full-blob “supernodes.”