Ethereum is Preparing to Launch the Fusaka Hard Fork on December 3

By Emir Abyazov

Ethereum is preparing for one of its most significant upgrades to date. The Fusaka hard fork, already tested on the final testnet “Hoodi,” is scheduled to go live on December 3, promising to deliver major improvements in scalability, speed, and network efficiency.

A defining moment for Ethereum’s evolution

“Another smooth upgrade, another key milestone on the road to Fusaka,” wrote the Nethermind team on social media on October 29, after their popular validator client successfully completed the fork.

🚀 The @ethereum 𝗛𝗼𝗼𝗱𝗶 𝗙𝗼𝗿𝗸 has been successfully completed and is now running seamlessly on the 𝗡𝗲𝘁𝗵𝗲𝗿𝗺𝗶𝗻𝗱 𝗖𝗹𝗶𝗲𝗻𝘁.

Another smooth upgrade, another key milestone on the road to Fusaka.

Big thanks to everyone in the ecosystem who helped make it happen -… pic.twitter.com/TEze2vgCx7

— Nethermind (@NethermindEth) October 28, 2025

The update introduces several Ethereum Improvement Proposals (EIPs), most notably EIP-7594 (PeerDAS). This innovation, known as Peer Data Availability Sampling, allows validators to read smaller chunks of Layer 2 data instead of entire blobs. The result is faster, lighter, and more efficient nodes, bringing Ethereum one step closer to seamless scalability.

Blob utilization (measures how much blob data space is used for Layer 2 activity). Source: Dune

Two other key proposals, EIP-7825 and EIP-7935, aim to raise gas limits and enhance execution efficiency, paving the way for parallel processing — the ability for Ethereum to execute multiple smart contracts simultaneously. Other EIPs strengthen zero-knowledge rollups, further optimizing Layer 2 performance.

How PeerDAS works. Source: Datawallet

Three phases to the full Fusaka rollout

The Fusaka implementation will roll out in three stages:

• The mainnet launch,
• The activation of the blob capacity increases,
• A final hard fork that expands that capacity even further.

This milestone comes amid significant personnel changes within the Ethereum Foundation, as several high-profile members have recently departed, expressing concerns about the foundation’s direction. 

Yet Ethereum continues to push forward, recently reaching a historic high thanks to rising institutional demand and ETF-driven investment.

ETH reached a new ATH in August. Source: CoinCodex

Solving Ethereum’s scalability challenge

The Fusaka update directly targets scalability, one of the three pillars of the blockchain trilemma — a concept defined by co-founder Vitalik Buterin that also includes security and decentralization.

While Ethereum has historically prioritized security and decentralization, this upgrade marks a shift toward balancing all three. Competing blockchains like Solana and Sui have raced ahead on scalability, but Ethereum’s methodical approach is now paying off.

The next step, the Glamsterdam upgrade, continues Ethereum’s “Surge” phase, further boosting performance while maintaining decentralization. Together, these updates represent a steady march toward a faster, more resilient Ethereum ecosystem.

Source:: Ethereum is Preparing to Launch the Fusaka Hard Fork on December 3