Cardano has launched its V11 Van Rossem upgrade on the preview testnet, marking a significant step in its hard fork roadmap. The testnet is now running on protocol version 11, following a governance proposal enacted on May 8. This phase, while currently affecting only the testnet, is a precursor to the mainnet governance vote scheduled for May 29. The V11 upgrade aims to enhance Cardano's scalability, developer efficiency, and infrastructure security. Key improvements include faster smart contract execution, reduced costs, and stronger cryptographic features. Stake pool operators and infrastructure teams are advised to upgrade to cardano-node v11.0.1 to support the new protocol. Meanwhile, DB-Sync v13.7.0.5 has been released to ensure compatibility during the transition. The Cardano team emphasizes a phased deployment approach, with ongoing testing and readiness checks. The PreProd environment has seen progress, though some delays persist. The mainnet governance vote remains on track for May 29, contingent on successful testnet progress and ecosystem readiness.