The successful testnet integration was met with immediate approval from key infrastructure providers across the ecosystem. In a post shared on social media platform X on Tuesday, prominent validator client team Nethermind marked the occasion, noting that the deployment marks another smooth upgrade and a key milestone on the road to Fusaka. The completion of the Hoodi testnet phase acts as the ultimate dry run before developers implement the changes on the main Ethereum blockchain next month.
When the Fusaka upgrade officially goes live on the mainnet, it will introduce several crucial Ethereum Improvement Proposals, commonly known as EIPs. Among the most anticipated changes is the implementation of Peer Data Availability Sampling, or PeerDAS, via EIP-7594. This specific improvement fundamentally alters how validators interact with data by enabling them to read smaller, manageable pieces of data on layer 2 networks rather than forcing nodes to download full data blobs. By reducing the heavy data burden traditionally placed on individual network participants, PeerDAS is expected to significantly boost overall node efficiency and network throughput.
In addition to PeerDAS, the Fusaka update bundles EIP-7825 and EIP-7935. These proposals are specifically tailored to raise the network’s gas limit and fine-tune operational efficiency as Ethereum systematically prepares to unlock parallel execution. Parallel execution represents a major technological leap for the network, allowing the blockchain to process multiple smart contracts simultaneously rather than in a rigid, sequential order. Furthermore, the upgrade incorporates several other EIPs dedicated to enhancing the performance and efficiency of zero-knowledge rollups, which are rapidly becoming the backbone of Ethereum’s scaling strategy.
This significant technical milestone arrives against a backdrop of notable organizational changes within the broader Ethereum ecosystem. Over recent months, the Ethereum Foundation has experienced a major leadership shake-up, marked by the departure of several longtime contributors and prominent researchers. Some departing veterans have publicly questioned the strategic direction in which the foundation is steering the network, creating lively debate within the decentralized community regarding governance and development priorities.
Despite these internal shifts and debates over future direction, Ether has enjoyed strong market performance. The native asset has reached new all-time highs this year, propelled largely by sustained institutional inflows into spot exchange-traded funds and an accelerating trend of corporate treasury adoption by major enterprises looking to hold ETH on their balance sheets.
Fusaka a three-part process
The execution of the Fusaka upgrade is structured as a deliberate, multi-stage process to ensure stability and smooth integration across the decentralized network. According to the development roadmap, the rollout will occur across three distinct phases. The first phase involves the actual mainnet launch, which brings the core infrastructure changes live. In the second phase, the specific Ethereum Improvement Proposal that implements a planned increase in blob capacity will be officially activated. Finally, the third phase will see a second blob capacity hard fork take effect, further expanding the data capacity available for layer 2 scaling solutions.
Once the complete implementation of Fusaka concludes, the core developer community and researchers will immediately pivot their attention toward the subsequent major milestone, known as the Glamsterdam upgrade. Glamsterdam is positioned as another essential component of the "Surge" stage on Ethereum’s overarching technical roadmap, which is singularly focused on addressing and solving blockchain scalability at a global level.
Fusaka aims to fine-tune weak point in blockchain trilemma
The primary thrust of the Fusaka upgrade is to directly address Ethereum’s historical struggle with scalability, which forms one-third of the famous "blockchain trilemma." The trilemma, a conceptual framework coined by Ethereum co-founder Vitalik Buterin, posits that decentralized networks can typically only optimize two out of three desirable properties at any given time: decentralization, security, and scalability.
From its inception, Ethereum was deliberately engineered to prioritize robust decentralization and uncompromising security over sheer transaction speed and raw scalability. However, this design choice created openings for a new wave of rival layer 1 blockchains—such as Solana and Sui—to enter the market. These competing networks have heavily emphasized scalability from day one to offer instantaneous, low-cost transactions designed to capture market share from Ethereum. The ongoing series of upgrades, starting from the shift to proof-of-stake through to upcoming forks like Fusaka, represent Ethereum’s methodical approach to solving the trilemma without compromising its foundational values.
The arrival of the Fusaka hard fork follows approximately six months after Ethereum’s previous major network-wide upgrade, known as Pectra. While Fusaka is heavily focused on data availability, gas optimization, and laying the groundwork for parallel execution, Pectra centered primarily on improving staking performance, expanding validator capabilities, and introducing advanced wallet features designed to vastly improve the overall user interface and user experience for everyday participants in the decentralized economy.
