Ethereum developers conducted the final experimental run of the Fusaka upgrade on the Hoodi testnet on Oct. 28, completing all three planned testnet simulations without major issues. Hoodi followed successful implementation on the Holesky and Sepolia networks, each validating key protocol changes designed to improve scalability and reduce costs for users and validators.
Fusaka’s centerpiece is the PeerDAS proposal, which allows validators to verify blockchain data in segments rather than downloading full blobs, significantly easing bandwidth requirements. This enhancement is expected to benefit layer-2 rollups and institutional nodes alike, optimizing resource use and lowering entry barriers for network participation.
With the final test concluded at 18:53 UTC, the Ethereum Foundation will announce the mainnet activation date after a mandatory 30-day waiting period. Core developers have discussed scheduling the hard fork around Nov. 28, with a backup date of Dec. 3. This window aligns with prior upgrade cadences, allowing time for ecosystem tooling, node operator readiness, and community education.
Testnet block explorers confirmed stable network performance, with block times and gas cost metrics aligning closely with mainnet conditions. Stress tests focused on BlobTransactions, verifying that calldata compression and retrieval mechanisms support high-volume workloads without congestion.
Developers continue to finalize peer review of related EIPs, including caching improvements for beacon chain data and optimizations to proposer-builder separation. These auxiliary changes aim to reinforce the network’s resilience and foster healthier validator economics post-Fusaka.
Stakeholders cite Fusaka as a critical phase toward Ethereum’s long-term roadmap, which includes subsequent upgrades codenamed Glamsterdam and later phases of scaling research. Industry watchers anticipate Fusaka laying the groundwork for broader adoption by reducing operational costs and enabling more efficient smart contract execution.
In summary, the successful Hoodi test signals readiness for Fusaka’s mainnet rollout. Community members are advised to update client software and review upgrade documentation ahead of the mainnet hard fork, expected in late November or early December.
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