ETH’s Fusaka Upgrade Completes Final Hoodi Testnet Before Mainnet Launch
The Fusaka upgrade is now on the Hoodi testnet, which is the last testing phase for ETH. This is a large step toward better scalability and performance. The successful activation, which took place on October 28, is a major milestone that clears the way for the Fusaka mainnet rollout, which is set to begin in ahead December.
The Road to Fusaka: Progress on the Testnet and the Mainnet Timeline
The Hoodi testnet activation is the last step in a phased testing plan that included earlier installations on the Sepolia and Holesky testnets in October. As excitement grows for Fusaka’s mainnet debut, these careful processes have given the developer and user community confidence in its reliability.
The first part of the mainnet upgrade should go online on December 3. This will make Fusaka the direct successor to the Pectra upgrade released in May.
Key Improvements With Fusaka
Fusaka brings many technical improvements to make ETH work more efficiently and handle data more effectively. The introduction of Peer Data Availability Sampling (PeerDAS) through EIP-7594 is at the top of the list.
This improves how nodes obtain and process . This upgrade is further enhanced by the addition of Verkle Trees, which offer a more efficient way to handle state proofs and save space, as well as a higher block gas limit to speed up base-layer throughput.
Increasing Blob Capacity: A Game Changer For Layer-2
One of the most significant things about the Fusaka upgrade is its plan to greatly expand the network’s blob capacity. This is very significant for lowering transaction costs on Layer-2 rollups. The phased rollout adds forks that gradually increase the number of blobs per block.
The first BPO fork, scheduled for mid-December, will add 10 blobs, with a maximum of 15. Another fork, which is tentatively set for January 2026, might raise this to 14 blobs per block, with a maximum of 21.
This gradual rise is set to more than double ETH’s existing data capacity, immediately improving Layer-2 scalability and reducing transaction fees.
The Market’s Response and Outlook
(ETH) remained highly volatile, dropping more than 2% to about $4,000 just later than the Hoodi announcement, despite Fusaka’s technical triumphs.
This price movement shows the market is cautious due to broader economic uncertainty, especially ahead of Federal Open Market Committee meetings and interest rate decisions, which have historically made risk assets more volatile.
The end of the testnet phase for the upgrade on Hoodi marks a significant step forward in ETH’s continued development.
As the mainnet rollout gets closer, the upgrade’s focus on data scalability, efficiency, and Layer-2 compatibility shows how ETH is still growing as a fundamental blockchain for decentralized applications and financial infrastructure.
