Optimism has activated its Superchain interoperability upgrade on the Sepolia testnet, enabling developers to test native cross-L2 messaging between OP Stack chains. The upgrade marks a milestone for the testnet but is not yet active on mainnet. Sepolia provides a safer environment for testing before mainnet deployment.
Techub News – Optimism’s Superchain interoperability upgrade is now live on the Sepolia testnet. Developers finally get a fresh place to test native cross-L2 messaging between OP Stack chains. And that’s the point: this is a testnet step, not a full mainnet rollout. The upgrade is meant to support native message passing across OP Stack chains. A real milestone for Sepolia, sure. But not the main event. Bitcoinist says the Sepolia testnet gives OP Labs and developers a safer place to try the upgrade before mainnet launch.
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