Ethereum Is Getting Faster: Fusaka Upgrade EXPLAINED

Ethereum is getting its biggest upgrade since The Merge.

This week, the Fusaka Upgrade went live on Ethereum’s Sepolia Testnet, and its mainnet launch is set for December 3rd, 2025.

This upgrade has the potential to turn the crypto market’s #2 crypto by market cap into a leader for on-chain transactions — defeating the chain’s biggest critics in the process.

Here’s what you need to know.

Fusaka Could Turn Ethereum Into a Transaction Giant

Ethereum's Fusaka upgrade is a hard fork designed to improve user experience and network scalability. It's expected to be the largest network upgrade since The Merge all the way back in September 2022.

It was confirmed at the 162nd consensus layer meeting earlier this year, with the aim of making the Ethereum network more scalable and efficient.

The previous Pectra upgrade, which went live a few months ago, prepared the ground for these enhanced innovations. At the time, Pectra simplified validator management and introduced programmable EOAs (Externally Owned Accounts) for transaction batching.

Combined with the blob transaction framework released during the Dencun upgrade, Fusaka aims to dramatically increase the amount of data processed by Layer-2 networks.

This could have massive implications for both Ethereum users and developers.

It means, in the very near future, Ethereum could potentially handle tens of thousands of transactions per second.

What's Inside the Fusaka Upgrade?

Fusaka covers backend-focused EIPs designed to improve scalability and efficiency without disrupting existing infrastructure.

Behind the scenes of this hard fork, the following core innovations are being implemented:

• EIP-7594 (PeerDAS): Reduces the amount of block data nodes must download, which lowers their load and boosts scalability for Layer-2 solutions.
• EIP-7951: Adds support for web2 cryptography standards, which allows mobile devices to sign Ethereum transactions directly and simplifies integration with existing hardware security solutions.
• EIP-7918: Links blob base fees to execution costs, which keeps these fees affordable and prevents unpredictable spikes.
• EIP-7935: Raises the default gas limit for Layer-1, which increases the number of transactions Ethereum can process per second and shortens execution times.
• EIP-7642: Allows nodes to share information about the range of blocks they store, which reduces sync time and makes node setup easier.
• EIP-7934: Introduces a protocol-level cap on execution block size (10 MB), which keeps the network stable and prevents specific DoS attacks.
• EIP-7825: Sets a maximum 30 million gas limit for a single transaction, which prevents any transaction from consuming most block resources and makes the system spam-resistant.
• EIP-7883: Increases the gas cost for Ethereum's ModExp (modular exponentiation) precompile, which ensures fair pricing for heavy cryptographic computations.
• EIP-7823: Sets a maximum size for each input parameter of Ethereum's ModExp precompile, which prevents extremely large inputs and improves network stability.

Additionally, the hard fork is set to include the Verkle Tree upgrade. This will replace Ethereum's current Merkle Patricia Trie state storage, making network data much lighter and easier to verify.

How Fusaka Will Improve Ethereum

The Fusaka hard fork is not just another small upgrade addressing developers' minor needs. It is set to become a major milestone for the chain, making Ethereum more scalable and accessible for end-users.

This means you can expect to see increased:

• Scalability. With PeerDAS and higher gas limits, Ethereum will significantly boost scalability for Layer-2 solutions like Arbitrum, Base, and Optimism, enabling them to process more transactions at lower costs.
• Efficiency. Verkle Trees reduce the amount of data nodes must store, making the network lighter and lowering hardware requirements for node operators. As a result, more participants will be able to join the network, increasing decentralization and security.
• Security and stability. Gas and block size limits protect Ethereum from spam or oversized transactions that could clog the network. This makes Ethereum more resilient under high demand and network stress.
• Developer-friendliness. The upgrade introduces more tools, improving dApp development, compatibility with Web2 ecosystems, and mobile integration.
• Roadmap clarity. Fusaka lays the foundation for the Glamsterdam upgrade in 2026, which will introduce faster block times and advanced features. This gives Ethereum a clear path toward its global vision of a secure, efficient, and universally accessible blockchain.

As a result, Ethereum's evolution through hard forks leads the network toward higher scalability and resilience.

What Fusaka Means For Ethereum Users

Since it first became widespread, Ethereum has been plagued by slow and expensive transactions during high-usage periods. As a result, we’ve seen countless “Ethereum competitors” emerge in the space, hoping to solve these issues and create a better experience for users.

The plan for the Fusaka upgrade? Maintain Ethereum’s position as a leading smart contract platform by making the chain more competitive through these upgrades to its speed and scalability.

With Fusaka fast approaching in December, Ethereum is ready to fight for its position in the crypto market. With a faster network and cheaper fees, this could be the moment Ethereum proves its biggest detractors wrong and its strongest supporters right.