Ethereum has officially activated the 'Fusaka' upgrade, a technical enhancement designed to lower operational costs for node operators and improve settlement speeds for Layer-2 networks. The update focuses on optimizing data handling and storage efficiency, addressing long-standing scalability concerns. The activation immediately triggered a massive spike in Blob fees, increasing them by approximately 1500x, while also introducing PeerDAS for better data throughput. Following the launch, Vitalik Buterin proposed a specific gas limit of 16,777,216 per transaction for 2025 to establish hard invariants. The update focuses on enhancing protocol security and rollup efficiency. This strategic shift aims for regular, predictable protocol delivery and prioritizing value accrual for ETH holders. [Update 1] New details have emerged regarding the specific mechanism driving the fee changes. The upgrade introduces EIP-7918, which establishes a minimum price floor for blob fees. Under this new rule, blob fees must be at least 1/15.258 of the Layer 1 execution base fee. This structural change effectively forces a correlation between L1 activity and data availability costs, aiming to increase ETH burn and better reflect resource consumption.