Ethereum’s Fusaka Hard Fork Nears Launch, Glamsterdam Gears Up

Last Updated on July 21, 2025

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Key Takeaways:

  • Ethereum’s Fusaka upgrade is slated for early November, featuring 11 EIPs, with EIP-7825 focused on scalability and attack resistance.
  • Two testnets are planned before launch, while development for the Glamsterdam upgrade, targeting 2026, is already underway with proposals like halving block times.
  • Discussions are ongoing around raising the gas limit to 150 million, with nearly 50% validator support for a separate 45 million increase.

Ethereum’s upcoming Fusaka upgrade is tentatively scheduled for early November and aims to enhance scalability and security.

It will feature 11 Ethereum Improvement Proposals (EIPs), including EIP-7825, which focuses on improving resistance to attacks.

Fusaka upgrade timeline Devnet on July 23, testnets in Sept-Oct, mainnet launch planned for Nov 5–12.
Timeline details based on a developer update published via Ethereum Daily on Paragraph.com

To streamline development, some proposals like EIP-7907 and the EVM Object Format upgrade have been removed.

The next devnet is launching this Wednesday, followed by two public testnets – one between late September and early October, and another shortly after – before the mainnet rollout.

Developers are also discussing an increase in Ethereum’s gas limit to 150 million to further boost network throughput.

Planning is already underway for the Glamsterdam upgrade, expected in 2026.

This may include more ambitious changes such as reducing block times from 12 seconds to 6, which would greatly enhance the DeFi user experience.

Core features like ePBS and BALs are being built, with final upgrade decisions expected during the August 1 AllCoreDevs call.

Meanwhile, Ethereum validators show growing support for raising the gas limit to 45 million, a move nearly 50% of staking power already backs, according to Vitalik Buterin.

Developers are racing to finalize Fusaka in time for Devconnect, scheduled for November 17–22 in Buenos Aires.

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