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[Ethereum Foundation Announces Fusaka Upgrade Activation on December 3, 2025] The Ethereum Foundation has released an announcement regarding the Fusaka upgrade, scheduled to activate on Ethereum mainnet slot 13,164,544, with an estimated time of December 3, 2025, at 21:49:11 (UTC). This upgrade introduces the Blob Parameter Only (BPO) fork to safely scale blob throughput after PeerDAS activation. The main feature of Fusaka is PeerDAS (Peer Data Availability Sampling), which significantly enhances blob throughput and optimizes the execution layer and consensus layer, aiming to improve L1 performance and enhance user experience.