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  • Nethermind v1.35.2 Fusaka-ready
    • Mandatory upgrade includes Osaka, BPO1 and BPO2 mainnet configs; upgrade before Dec 3, 21:49:11 UTC to remain in sync.​
  • Geth v1.16.7 mainnet release
    • Required update enabling Fusaka on mainnet; all users should update before December 3, especially if previously installed v1.16.6.​
  • Besu 25.11.0 required update
    • Mainnet‑required release adds Osaka, BPO1, BPO2 fork times and raises Ethereum mainnet block gas limit to 60M.​
  • Erigon v3.2.2 mandatory
    • Mandatory Fusaka update adds blob recovery tool via remote beacon API and schedules mainnet activation for December 3, 2025.
  • Teku v25.11.0 required
    • Required mainnet update containing Fusaka scheduling; operators should download and upgrade promptly to be ready for activation
  • Lodestar v1.36.0 mandatory
    • Fusaka mainnet release; mandatory for node operators to be fork‑ready for December 3 and subsequent BPO forks.
  • Nimbus CL v25.10.0 released
    • Low‑urgency update raises default gas limit to 60M, improves Beacon API support, adds runtime config flexibility, drops macOS amd64

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