The next major milestone is the Fusaka upgrade, a hard fork scheduled for December 3, 2025 (subject to final confirmation). Fusaka focuses on scalability, efficiency, and node performance, introducing PeerDAS (Peer Data Availability Sampling) - a mechanism that lets nodes verify blob data without downloading it in full. This reduces resource requirements for validators and expands Ethereum's overall data capacity, strengthening support for Layer-2 rollups. The upgrade will also increase blob capacity per block, enabling cheaper and faster rollup transactions. It bundles multiple Ethereum Improvement Proposals (EIPs) to optimize gas usage, enhance the EVM, and improve compatibility with technologies such as zero-knowledge rollups. A new concept called Blob-Parameter-Only (BPO) forks will allow smaller, targeted updates between major upgrades, giving Ethereum more flexibility to adapt to network demand. Following Fusaka, Ethereum's roadmap will continue along the Surge phase of its long-term scaling plan, with future releases like the Glamsterdam upgrade expected to build on these data-availability enhancements. Together, these steps move Ethereum closer to its goal of becoming a highly scalable, energy-efficient, and globally accessible settlement layer for decentralized applications.
