Release notes

Important

This release replaces v1.35.1 and is mandatory for all node operators.

It includes the Ethereum Mainnet Fusaka hard fork configuration (Osaka, BPO1, and BPO2 upgrades).

All nodes must upgrade to this version before the Fusaka hard fork activation on December 3, 2025 at 9:49:11 PM to stay in sync.

Overview

This release activates the Ethereum Mainnet Fusaka hard fork, which introduces the Osaka, BPO1, and BPO2 upgrades.