Ethereum's Fusaka upgrade is scheduled to activate on the mainnet on December 3, as announced by the Ethereum Foundation. This upgrade is designed to enhance data availability and scalability, allowing Ethereum to manage increased transaction volumes from layer 2 chains, which currently support a $47 billion on-chain economy. A key feature, PeerDAS, aims to reduce the data load for nodes during layer 2 transaction verification, potentially boosting throughput and lowering bandwidth costs. The Fusaka upgrade also incorporates two Ethereum Improvement Proposals (EIPs) that will expand the base layer's block and data limits, further supporting the network's scalability efforts. These changes are expected to significantly improve Ethereum's capacity to handle growing transaction demands.