14 October 2025
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Ethereum’s Fusaka Upgrade Tested on Sepolia, Hoodi Next
- Ethereum developers initiated the second test of the Fusaka upgrade on the Sepolia network, preparing for its mainnet launch.
- The test follows a successful implementation on the Holesky testnet two weeks prior.
- A final test will occur on the Hoodi network on Oct. 28, after which a mainnet activation date will be set.
- Fusaka aims to reduce costs for institutions by allowing validators to verify partial data through its PeerDAS feature, decreasing bandwidth demands.
- Testnets like Sepolia help simulate real conditions before upgrades go live on Ethereum's mainnet.
- Holesky is nearing deprecation, with Hoodi positioned as its successor, providing a closer reflection of the mainnet.