Ethereum Fusaka Upgrade: Blob Capacity Raised 8x and Layer 2 Fees Collapse
Ethereum's Fusaka upgrade, activated December 3, 2025, raised blob capacity from 6 to 48 per block and lifted the gas cap to 150 million. The result: Layer 2 transaction fees fell by more than 80% and DeFi throughput surged across Arbitrum, Optimism, Base, and Scroll.