Ethereum Prepares for Fusaka Upgrade with Final Testnet Phase

According to BlockBeats, Ethereum is advancing into the final testnet phase before the Fusaka upgrade, scheduled for December 3. This upgrade introduces a single transaction gas limit of approximately 16.78 million units to enhance block efficiency and prepare for parallel execution across the network. The gas limit restricts the processing capacity available to a single transaction, ensuring no transaction monopolizes an entire block, thus enabling more balanced network activity. The Fusaka upgrade has already been activated on the Holesky and Sepolia testnets. The next phase of the Fusaka upgrade is set to deploy on the Hoodi testnet on October 28, with the mainnet launch anticipated in December 2025. Fusaka upgrade (EIP-7825) is a significant part of Ethereum's roadmap, following the Dencun upgrade in March 2024 and the Pectra upgrade on May 6, 2025. This upgrade will increase Ethereum's default block gas limit to 60 million and set the single transaction gas cap at 16.77 million (EIP-7825). Additionally, it introduces PeerDAS, a core feature of the upgrade. PeerDAS (Peer Data Availability Sampling) allows Ethereum nodes to store only a small random portion of second-layer "data blocks" instead of the entire dataset. This approach maintains network security while reducing hardware requirements and enabling cheaper, higher throughput scaling for second-layer networks.