Ethereum's Fusaka Upgrade Set for December 3, Promising Major Throughput Boost via PeerDAS

The Ethereum mainnet is scheduled for a significant evolution with the forthcoming Fusaka upgrade, slated for activation on December 3, 2025, at the anticipated block height of 13,164,544 (approximately 21:49 UTC). This hard fork follows the Pectra upgrade, which was implemented in May 2025, and is designed to substantially enhance the network's efficiency and scalability for decentralized applications and users across the ecosystem.

The core technical advancement introduced by Fusaka is Peer Data Availability Sampling, or PeerDAS, detailed in EIP-7594. This mechanism fundamentally changes how network participants confirm data availability by allowing nodes to cryptographically verify only small, random samples of data blobs, rather than processing the entire data set. This shift is critical for reducing the bandwidth and operational overhead that previously limited network expansion.

Furthermore, the upgrade signals a major capacity increase by raising the block gas limit from 30 million to 150 million units. This five-fold expansion in computational allowance per block is projected to significantly boost transaction processing speeds, with some analyses suggesting throughput could reach as high as 12,000 Transactions Per Second (TPS) following the deployment. This enhanced capacity is expected to facilitate the creation of more intricate decentralized applications and lead to more economically viable experiences for end-users through potentially lower transaction fees.

The deployment process for Fusaka has been rigorously managed, involving three distinct testing phases to ensure network stability. The upgrade successfully navigated the Holesky Testnet starting October 1, 2025, followed by the Sepolia Testnet launch on October 14, 2025, and concluded with final validation on the Hoodi Testnet activated on October 28, 2025. This comprehensive testing covers the 11 included Ethereum Improvement Proposals (EIPs), which also include EIP-7825, EIP-7823, EIP-7883, EIP-7892, EIP-7917, EIP-7918, EIP-7934, EIP-7935, EIP-7939, and EIP-7951, all contributing to a more streamlined foundation.

As of October 30, 2025, the market price for Ethereum (ETH) stood at $3,773.39 USD, marking a 4.44% decrease from the prior close. This technical progression is a deliberate step within Ethereum's 'Surge' roadmap, aiming to elevate the system's capacity to handle growing global demand with greater grace and efficiency.