Ethereum developers have conducted another test of the Fusaka upgrade on the Sepolia testnet. This is one of the last steps before the upgrade is launched on the mainnet, which should improve blockchain performance and reduce network costs.
Two weeks ago, the team successfully tested Fusaka on the Holesky network, where the testing showed the stability of key features. Now the developers’ attention is focused on preparing for the final check — it will take place on October 28 on the new Hoodi network. After analyzing the results, a date will be set for Fusaka’s deployment on the Ethereum mainnet.
What will Fusaka bring?
The main element of the upgrade will be the PeerDAS (Peer Data Availability Sampling) technology. It changes the approach to data processing in the blockchain: validators are no longer required to store and verify the entire volume of information. Instead, they work only with individual data fragments, which significantly reduces the load and increases efficiency.
This mechanism not only speeds up validator operations but also reduces network costs for layer-two solutions, where transaction speed and stability are critical. PeerDAS could become the foundation for future Ethereum optimizations, especially in the field of corporate and institutional services, where bandwidth savings are important.
Why Sepolia and Hoodi tests are important
Sepolia has served for several years as one of the main platforms for testing new Ethereum features. It is close in parameters to the mainnet, which allows potential errors to be identified without risk to users.
Holesky, where previous tests were conducted, will soon be decommissioned. It will be replaced by Hoodi — a new testnet created in accordance with current Ethereum standards and future scalability requirements. It is expected that the test on Hoodi will show how ready the system is for the full implementation of Fusaka.
Context: after Pectra, Ethereum moves towards optimization
Fusaka follows the Pectra upgrade, which developers activated a few months ago. While Pectra strengthened infrastructure resilience and improved user interaction, Fusaka makes the network lighter and cheaper to maintain.
According to analysts, the combination of these two upgrades could radically change the economics of Ethereum’s operation. Reducing the amount of data validators are required to process will lower hardware requirements and pave the way for broader adoption of Layer-2 solutions.
What’s next?
The final Fusaka check on Hoodi will be decisive. After that, developers will announce the activation date for the upgrade on the mainnet. The deployment is expected to take place before the end of the year.
Fusaka could become one of the most significant Ethereum upgrades in recent years — it simplifies data processing, reduces costs, and makes the network more competitive in the race with other blockchains focused on scalability.
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