Sei Mainnet Completes v6.6 Upgrade, Launching Two Major Giga Network Enhancements

Sei finalizes its largest update in two years, initiating Ares and Eidos upgrades to decouple EVM history from Cosmos state while optimizing node sync.

Woofun AI reports that the Sei mainnet has finalized the v6.6 upgrade, marking the most significant version update since EVM support was introduced in May 2024. The release initiates two of three planned Giga enhancements: the "Ares upgrade" begins phasing out the v2 executor, while the "Eidos upgrade" separates on-chain states, ensuring the EVM history database no longer shares data with the Cosmos state. The update also resolves over 30 issues and optimizes node synchronization, consensus timeouts, and developer tools.