Ethereum is undergoing a critical infrastructure upgrade, similar to a crowded city being redesigned to become more efficient, faster, and safer. The next two major upgrade phases are Fusaka and Glamsterdam, reflecting Ethereum's efforts to accelerate the speed and frequency of network upgrades.
Hard Fork Fusaka: Performance and security upgrade in November
Hard Fork #Fusaka is expected to be deployed on the mainnet from November 5 to 12, 2025. The main goal of this upgrade is to enhance the scalability, performance, and security of the Ethereum network. Fusaka includes 11 Ethereum upgrade proposals (EIPs), the most notable of which are:
EIP-7825: Helps enhance resistance against cyber attacks, similar to installing additional layers of protection and smart security systems.
To expedite the testing and deployment process, two proposals EIP-7907 and the EVM Object Format will be temporarily excluded from this upgrade.
The deployment roadmap for Fusaka is taking place in clear stages:
July 22–23: Developers will finalize the design and launch the first test version (Devnet-3).
End of August: Developers will release the necessary tools for testing.
September 22 – October 3: Opening the first "test road" (testnet phase 1).
October 6–10: Continuing to open the second test road.
November 5–12: The official upgrade will be "inaugurated" and deployed to the entire network (mainnet).
Fusaka is the next major upgrade following #pectra (deployed 6 months ago), demonstrating Ethereum's commitment to continuously improving and optimizing the network.
Glamsterdam upgrade: A major plan for 2026
While Fusaka is in the final stages of development, Ethereum developers have begun planning for the next major upgrade named Glamsterdam, expected to be deployed in 2026. Currently, Glamsterdam is still in the planning phase and may include groundbreaking changes such as:
Reducing block processing time from 12 seconds to 6 seconds: Like speeding up the movement of a "subway train", significantly speeding up transaction confirmations.
Increase gas limit to 45 million: This will increase the capacity of each block, allowing for more transactions and activities on the network. Currently, about 50% of validators have expressed support for this change.
The development roadmap #Glamsterdam is also being outlined:
Currently: Engineers are building the foundation and basic systems for the upgrade.
Next 2–4 weeks: Collecting feedback from stakeholders such as developers and experts.
August 1: Official confirmation of the features to be included in the Glamsterdam upgrade.
Overall, Ethereum is continuously evolving and upgrading to become a smarter "city", capable of handling more traffic, operating faster, and ensuring better security for all users and applications. Fusaka is the next leap, while Glamsterdam is a major plan promising groundbreaking improvements in the near future.