Ethereum's core developers have scheduled the Fusaka hard fork to launch on December 3, 2025, aiming to enhance scalability, security, and reduce operational costs. The upgrade will incorporate 12 Ethereum Improvement Proposals (EIPs) and will see an increase in blob capacity starting two weeks after the hard fork, on December 17. This upgrade will also be followed by another capacity increase on January 7, 2026. Blobs are used to store large datasets off-chain, improving efficiency and lowering transaction costs for layer-2 networks. The average blob count per block has risen to 5.1, a significant increase from 0.9 back in March 2023. Additionally, a code audit program with a $2 million reward for vulnerability disclosures is set to take place over four weeks leading up to the upgrade. The Fusaka implementation follows a previous upgrade in May that enhanced validator staking limits and account abstraction, optimizing layer-2 operations. As the upgrade approaches, the Ethereum exit queue has reached an all-time high, highlighting growing concerns among validators about potential sell pressure due to unstaked ETH.

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