Ethereum’s Fusaka Upgrade: The Scalability Breakthrough You Can’t Afford to Miss

Ethereum's network is about to get a major facelift—and your portfolio might just thank you for it. The Fusaka upgrade, launching imminently, promises to tackle scalability head-on with solutions that could finally make gas fees look less like highway robbery.

Why This Isn't Just Another Hard Fork

Fusaka isn't just tweaking the engine—it's rebuilding the transmission. Expect layer-2 integrations to scream past previous bottlenecks while keeping decentralization intact (take that, Wall Street sidechains).

The Fine Print That Matters

Early testnets show transaction finality slashed by 40%—real numbers for a chain processing over 1.2 million daily transactions. That's not optimism; that's math even TradFi analysts can't hand-wave away.

Will it live up to the hype? The market's already voting—ETH futures open interest just hit a 3-month high as speculators pile in. Because nothing screams 'smart money' like front-running an upgrade that might actually deliver.

In Brief

• The Fusaka fork fits into an Ethereum optimization strategy, without adding major new features.
• The gas limit is raised to 45 million, which could increase transaction capacity by over 11%, pending tests.
• Blob management is better regulated thanks to EIP-7892 and EIP-7918, to prevent abuse and improve blockspace efficiency.
• The Fusaka fork illustrates a strategic choice of technical sobriety, with governance focused on the network’s efficiency and stability.

Fusaka: Technical Optimizations Confirmed for Devnet-2

While a fresh breeze is blowing over Ethereum with the many positive effects brought by the Pectra update, Ethereum contributors finalized during the All Core Devs meeting on June 19 a set of improvement proposals (EIPs) to be integrated into Fusaka’s second test network, Devnet-2.

One major announcement concerns raising the gas limit to 45 million units, representing a theoretical increase of over 11% in block transaction capacity. Although this change is not formally part of Fusaka, it has been validated by all clients.

Parithosh Jayanthi, an engineer at the Ethereum Foundation, stated: “All clients seem to agree to MOVE to 45 million once the software versions are finalized”.

This increase remains subject to precise benchmarks, notably to prevent block propagation from exceeding acceptable latency thresholds.

In addition to this throughput improvement, several structural EIPs, such as EIP-7928, have been integrated into Devnet-2 to better regulate blob management, these data packets introduced with EIP-4844 during the Dencun fork. EIP-7892 limits the number of blobs a crypto transaction can include, a safeguard to prevent a single rollup from monopolizing data space.

EIP-7918, meanwhile, sets a minimum fee and maximum number of blobs per block. “Setting a minimum size for blobs paradoxically allows including a greater number”, explained Ben Adams from the Nethermind team. He also points out that without this floor, costs could become almost zero during low demand periods, making block use inefficient.

Fusaka: Consensus on Priorities, but Tensions over Omissions

Beyond these technical improvements, Fusaka also introduces several more discreet but significant optimizations for developers. EIP-7939 adds a new CLZ (count leading zeros) opcode, an instruction already present in most modern VIRTUAL machines, useful in certain calculations related to proofs or random generation.

The fork also incorporates EIP-7951, long-awaited, which adds a precompilation widely used in digital signatures on mobile and enterprise platforms. This advance paves the way for better integration of Ethereum with authentication standards.

However, these choices, seen as pragmatic by the majority of crypto developers, were not unanimous. Georgios Konstantopoulos, CTO at Paradigm, publicly criticized the non-integration of fixes for Solidity errors “stack too deep” and the 24 KB bytecode limit, two recurring irritants for developers. “These issues are among the most blocking today”, he reminded on X.

I'm still baffled that the Ethereum Core Dev community does not prioritize fixing the 2 most cited problem of EVM developers per the Solidity Lang survey despite our repeated efforts:

1. Stack too Deep: yes this is a Solidity skill issue a little bit but just add a SWAP/DUP17-32…

Crypto developer Potuz from the Prysm team replied that these topics had been addressed in EOF (EVM Object Format), a project once supported by Paradigm’s RETH team before their change of direction. He indicates that some trade-offs are also the result of political shifts in the ecosystem.

Rather than proposing spectacular innovation, Fusaka could nonetheless mark a strategic turning point. This fork shows that Ethereum is capable of adapting, optimizing, and consolidating without risking breaking its consensus. Attention is now on Devnet-2, expected this Monday, and a possible more ambitious Devnet-3. By betting on technical sobriety and more responsive governance, Ethereum’s CORE devs seem to want to lay the foundations of controlled scalability, a choice that could prove decisive this year, as evidenced by the crypto surge following the Pectra update.

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