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ETH Ethereum developers tentatively scheduled to deploy the Glamstam upgrade on the Sepolia Test Network on October 6
Although testing by the private development network (Devnet) is still discovering new vulnerabilities, Ethereum developers have initially determined to deploy the Glamstam upgrade on the Sepolia Test Network at 13:53 Coordinated Universal Time (UTC) on October 6. This timing provides a path for the main network release in December, but only if the next phase of testing produces a stable network environment.
Glamstam's timetable depends on Dev Network test results
Protocol expert Christine D. Kim pointed out in his latest newsletter that developers have agreed to an October 6 test date for Sepolia, but also acknowledged that there are certain restrictions. The biggest hidden danger is that Glamstam has not yet been successfully run on a stable private development network.
Glamsterdam-Devnet-9 was launched on September 1 and has 1,000 validator nodes, making it by far the largest number of nodes of its kind. However, the network has not reached a final stable state, which means that too few verifiers can correctly propose blocks to the chain head and confirm them. Stefan Starflinger, development operations engineer at the Ethereum Foundation (EF), said the size of the network exposed many problems, pointing out: "This shows that there are still quite a number of edge situations and vulnerabilities that need to be addressed." He added that the previous development network, Devnet-8, has a more serious flaw: if the block proposed by the verifier has the same hash value as its parent block, the entire network may freeze.
In addition, EF researcher Maria Silva flagged a vulnerability related to EIP-8037 (increased cost of state creation gas), which would require all execution layer clients to update their code. Due to the need to make these fixes, another development network is about to be launched. As of this week, it is Devnet-11 that deserves attention, not Devnet-10 as originally planned. Parithosh Jayanti, development operations engineer at the Ethereum Foundation who chaired the meeting, said if the new development network fails again,"we will have to assess whether October 6 is still feasible on a case-by-case basis."
Hoodi testnet and mainnet timings are still uncertain
Developers have also postponed the decision to set a specific date for Hoodi, the second public testnet in the Ethereum promotion plan. Enrico del Fante of Consensus believes that given the problems identified in Devnet-9, it would be wise to wait a few more weeks to determine Hoodi's timing.
This uncertainty also extends to the main network. Developers still hope that the upgrade will reach the Ethereum main network by the end of 2026, but the timing of the Sepolia test network has not made the results more certain, especially since the client-side implementation is not currently considered ready for use on the main network.
It has been previously reported that Ethereum's broader roadmap schedules Glamsburg's main-network activation in December 2026, ahead of a separate advance plan for quantum-resistant infrastructure in 2029. The plan is related to the Hegotá upgrade that followed GlamAmsterdam, indicating that Ethereum makes major changes about every six months. When Fusaka activated as expected in December last year, Ethereum maintained this pace.
