Glamsterdam Upgrade Targeted for Sepolia on Oct 6
Ethereum (ETH)
Editor:
Eugene Serbin
Unlock-bc.com reports that Ethereum developers have tentatively scheduled the Glamsterdam upgrade for activation on the Sepolia testnet at 13:53 UTC on October 6, 2026. This date corresponds to epoch 351232 and serves as a planning anchor rather than a confirmed commitment, pending the outcome of private testing. The team is currently focusing on Glamsterdam-Devnet-11, which is slated to launch on September 14, marking a shift from earlier plans that prioritized Devnet-10.
Developer Christine D. Kim confirmed that the timeline remains fluid, noting that the Sepolia date was set before private networks demonstrated fully stable results. The decision follows finality issues encountered during Devnet-9, which tested with approximately 1,000 validator nodes. Ethereum’s multi-client architecture requires that any upgrade functions correctly across all independent execution and consensus client combinations.
Major infrastructure providers like Lido and Optimism have requested at least one full day of network stability before any fork goes live. While a December mainnet launch is considered aspirational, no specific dates have been locked in for the Hoodi testnet or the mainnet itself. Client teams must verify cross-client interoperability and resolve outstanding fixes before Sepolia can proceed as planned. The roadmap’s flexibility allows developers to prioritize stability over the calendar, ensuring that the upgrade is robust before wider deployment.
How the market reacted
Whalio's own Binance spot order flow for ETH, measured when this story was written up on 11 September 2026. Not the outlet's figures.
ETH is trading at $2,438.27 with a 1-hour buy ratio of 52.6%, indicating immediate short-term buying interest that contrasts with the 41.6% ratio over the past 4 hours. The 24-hour buy ratio sits at 49.4%, suggesting that buying pressure is currently fading relative to the immediate past hour. Volume Delta shows a positive $950,018 in the last hour, signaling net inflows, whereas the 4-hour and 24-hour deltas are negative at -$18,322,220 and -$10,957,474 respectively. Cumulative Volume Delta (CVD) for the 24-hour close is -$39,882,437, confirming that net selling has dominated the day’s trading activity. This data indicates that while there is momentary buying, the broader trend over the last day remains one of net outflows.
The latest daily buy ratio of 46.8% sits at the 16th percentile of the last 322 days, against a median of 49.5% - weaker buying than most days.
Was that an ordinary day?
The same Binance spot measurements for ETH, averaged over the days leading up to the story.
Over the preceding week, the 7-day average buy ratio was 49.9%, making the current 24-hour ratio of 49.4% slightly below the weekly norm by 0.5 points. Trading volume has been 1.25x the weekly average, indicating that activity is elevated compared to typical days. The coin has seen a price change of -2.8% over the last 8 days, with a total Volume Delta of -$6,474,438 for the period. Only 2 of the past 7 days recorded net buying, suggesting that selling pressure has been the dominant force recently. This day is not unusual in terms of buy ratio deviation but is notable for its higher-than-average volume.