Sepolia Testnet Fork for Ethereum's Glamsterdam Upgrade Scheduled for October 6 2026
What happened
The Sepolia testnet fork for Ethereum’s Glamsterdam upgrade is set for October 6, 2026, at 13:53 UTC.
The Context
- Protocol enhancement: The Glamsterdam upgrade introduces enshrined proposer-builder separation (ePBS) and block-level access lists, aiming to improve transaction efficiency.
- Development timeline: Following private devnet testing, the upgrade is on track for mainnet deployment in Q4 2026, contingent on successful validation.
- Global impact: The upgrade is expected to lower transaction fees and enhance block capacity, benefiting users worldwide, including those in Dubai.
The Number
— This is the target block gas limit increase from the current ~60 million, which will enable significantly higher transaction throughput.
Takeaway
As the testnet activation approaches, keep an eye on developer updates that could influence the mainnet timeline.
Beginner-friendly crypto tutorials, guides, and news.
"99Bitcoins is a crypto education and news site known for easy-to-understand content and comprehensive guides."
— A47 Editor
Sepolia Sets the Stage for Ethereum’s Glamsterdam Upgrade
Ethereum's Glamsterdam upgrade is set to launch on the Sepolia testnet on October 6, 2026, following successful rehearsals that increased the work limit per block to 200 million gas. This upgrade aims to enhance the network's capacity and efficiency.
Real-time updates, analysis, and reports on the blockchain and cryptocurrency sectors.
"Crypto News delivers real-time updates, analysis, and reports on the blockchain and cryptocurrency sectors."
— A47 Editor
Ethereum warns Glamsterdam testnet faces builder abuse
Ethereum has issued a warning regarding potential builder abuse on the Glamsterdam testnet, set to launch on October 6 on Sepolia. Developers have expressed concerns that the availability of free test ether could allow disposable builders to disrupt ...
Covers blockchain, cryptocurrency news, project analysis, and market insights.
"CoinDesk is a well-established cryptocurrency and blockchain news provider, offering comprehensive insights, market data, and industry research."
— A47 Editor
Ethereum confirms Glamsterdam dates, but warns 'fake' builders could stall the chain
Ethereum has confirmed the dates for its upcoming Glamsterdam upgrade, scheduled for October 6 on the Sepolia testnet, while cautioning that 'fake' builders could potentially disrupt the chain by outbidding legitimate developers and withholding trans...