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Ethereum Network to Undergo Major Speed Upgrade Test on October 6

Ethereum Network to Undergo Major Speed Upgrade Test on October 6

The Glamsterdam upgrade will test changes designed to increase Ethereum’s Layer-1 capacity and improve transaction processing.

Written by Rahul Dhingra, Edited by Rohan Pal | Updated: 29 September 2026 20:04 IST

Ethereum Network to Undergo Major Speed Upgrade Test on October 6

Photo Credit: Unsplash/FlyD

Glamsterdam combines Amsterdam and Gloas changes across Ethereum’s two protocol layers

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Highlights

Sepolia activation is scheduled for epoch 353,024
EIP-7928 introduces block-level access lists
Hoodi’s October 27 launch remains tentative

The Ethereum network plans to launch its Glamsterdam update on the Sepolia testnet on October 6 at 13:53:36 UTC, bringing its upcoming scaling solution closer to being tested on a live network. The Ethereum Foundation confirmed that the activation of Glamsterdam will take place during epoch 353,024 and slot 11,296,768. The launch dates of Hoodi and mainnet are yet to be decided. Therefore, the October 6 update applies to Sepolia only. This particular upgrade comprises updates known as Amsterdam on Ethereum's execution layer and Gloas on the consensus layer.

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As per the announcement, its largest changes include alterations to block building, block validation, and state handling by clients while processing transactions. Operators of nodes in Sepolia must have the appropriate version of both their execution and consensus clients before activation. ETH users and Ethereum mainnet users don't have anything to do about the Sepolia upgrade for the following reason. Glamsterdam adds enshrined proposer-builder separation, or ePBS for short, via EIP-7732. This update brings the relationship between block proposers and block builders to the Ethereum protocol level.

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:rotating_light:𝗟𝗔𝗧𝗘𝗦𝗧: Ethereum's Glamsterdam upgrade is set to go live on the Sepolia testnet on October 6, marking the next major testing step before a broader rollout. pic.twitter.com/AfeaExTP3b
— DustyBC Crypto (@DustyBC) September 29, 2026

In today's day and age, most block builders will build the execution payload and communicate with the validators via external means. In ePBS, the proposer will include the commitment by the block builder for the execution payload. The transaction is then processed by the Ethereum protocol to handle the payment made by the builder to the proposer. According to the Ethereum Foundation, the architecture helps eliminate the need for trustware middleware for block builder payments, while separating consensus validation from execution validation.

Another important element is going to be added to Glamsterdam through EIP-7928, which creates block-level access lists. The lists will keep track of the accounts and storage keys used within a block, as well as the state transitions caused by transactions. This would allow Ethereum clients to read state off the disk and put some of the work into the validation process of transactions, while optimising the state root computation. As per the official roadmap, Glamsterdam is an update aimed at preparing Ethereum for higher Layer-1 capacity.

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The next public testnet phase will be Hoodi if the Sepolia phase works as planned. The development meeting notes mention October 27 as a tentative Hoodi launch. Although discussions about whether or not Hoodi should be launched are slated for after the Sepolia phase, the Foundation has not scheduled Hoodi yet. Post-Glamsterdam, Ethereum's timeline points to Hegotá in 2027. The upcoming fork would involve a further series of updates within the blockchain protocol, while developers focus on making preparations for long-term plans related to native account abstraction, improved cryptography, and quantum resistance.

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Further reading: crypto network, Ethereum blockchain, ETH, Crypto Upgrade

Rahul Dhingra

Email Rahul Dhingra

Rahul Dhingra is a crypto writer at Gadgets 360, where he covers the exciting world of Cryptocurrency, Blockchain, Defi and Web3. Before joining Gadgets 360, he worked as a content specialist for a European-based Crypto Exchange. Rahul loves storytelling, not just through the written word but also through the visual medium. Beyond his professional life, Rahul is a sports fanatic. Whether it’s cricket or football, his passion for the game is contagious. More