Ethereum Fusaka Upgrade Confirmed For November

Key Takeaways

• Fusaka is Ethereum’s next hard fork, aiming for a November 2025 launch.
• The upgrade includes 11 EIPs, with EIP-7825 targeting network security and scaling.
• A gas limit increase to 150 million is being proposed to improve transaction capacity.
• Fusaka’s launch timeline is aligned with Devconnect, adding urgency to the release.
• Glamsterdam, Ethereum’s next upgrade, is expected in 2026, with proposals like 6-second block times and gas limit changes on the table.

What Is The Ethereum Fusaka Upgrade?

The Ethereum Fusaka upgrade is a highly anticipated protocol update that follows the Pectra hard fork. The next major upgrade following Fusaka is Glamsterdam.

Timeline For The Upcoming Fusaka Upgrade & The Subsequent Glamsterdam Hard Fork

Source: This Week in Ethereum Development

It includes a set of 11 Ethereum Improvement Proposals (EIPs) aimed at strengthening the Ethereum blockchain and laying the groundwork for future enhancements.

Key Goals Of The Fusaka Hard Fork

• Improved scalability
• Better network resilience
• Larger gas limits for enhanced throughput
• Streamlined development for future upgrades

According to ethPandaOps, a community-driven Ethereum dev organization, the next devnet will go live Wednesday, allowing for testing of Fusaka’s proposed changes.

EIPs Included In The Fusaka Hard Fork

Among the 11 EIPs included in the Fusaka devnet, one of the most notable is:

EIP-7825: Enhancing Network Resilience

This proposal focuses on making the Ethereum network more resistant to malicious attacks while simultaneously enhancing scalability, a critical step forward for Ethereum’s long-term viability.

Other Proposals

• EIP-7907, originally proposed to double the contract code size limit and introduce gas metering, has been removed to accelerate testing.
• The EVM Object Format (EOF), a controversial feature discussed earlier in 2024, will not be included in Fusaka, as confirmed by core developer Tim Beiko.

Raising Ethereum’s Gas Limit

Ethereum developers are also exploring a raise in the gas limit to 150 million. This would allow more transactions per block and reduce congestion, a move that could lower gas fees across the ecosystem.

Ethereum Fusaka Timeline

📅 Development Milestones

• Next Devnet: Wednesday, July 23rd
• Public Testnets: Late September and October
• Mainnet Launch: Early November 2025 (tentative)

Pressure to Meet Devconnect Timeline

Ethereum contributor Nixo emphasized the importance of tight timelines:

“If we want to ship by Devconnect, we need our timeline TIGHT. We’ll go over that in detail. Can we get client releases in the next month & a half?”

Source: devconnect.org

Devconnect is set to take place in Buenos Aires, Argentina, from November 17th to 22nd, putting added pressure on developers to meet the release deadline.

The Next Ethereum Upgrade On The Horizon

Following Fusaka, Ethereum’s next major protocol update will be Glamsterdam, scheduled for a 2026 release. Although still in early planning stages, some proposals are already being discussed.

Glamsterdam Development Roadmap

• Upgrade Features Finalization: August 1 during AllCoreDevs Execution Meeting
• Potential Release Window: 2026

Proposed Enhancements For Glamsterdam

Ethereum researcher Barnabé Monnot has suggested reducing block times from 12 seconds to 6 seconds, a move that would dramatically improve the user experience for DeFi apps.

Additionally, validators are signaling support for increasing the gas limit to 45 million, which would reduce transaction costs and improve scalability.

Vitalik Buterin on Gas Limit Increases

Ethereum co-founder Vitalik Buterin posted on X:

“Almost exactly 50% of stake is voting to increase the L1 gas limit to 45m.”

This indicates growing community support for network optimization in upcoming upgrades.

FAQ

Which EIPs are included in Fusaka?

Notable EIPs include EIP-7825 (resilience and scaling) and a proposed increase in the gas limit to 150 million. EIP-7907 and the EVM Object Format are excluded from this release.

When will Fusaka be released?

The tentative release date is early November 2025, just ahead of Devconnect in mid-November.

What comes after Fusaka?

The next major upgrade is Glamsterdam, expected in 2026. It may include reduced block times and further gas limit increases.

Why is the gas limit increase important?

Raising the gas limit allows for more transactions per block, helping to reduce fees and increase throughput across the Ethereum network.