Cardano has successfully activated the van Rossem hard fork, upgrading its mainnet to version 11. This significant update, completed on Saturday, aims to reduce smart contract execution costs and prepare the network for future enhancements, including the Dijkstra era hard fork and the Ouroboros Leios scaling upgrade. The transition from protocol version 10 to 11 occurred at epoch 644, marking a milestone as the first hard fork driven by Cardano's governance mechanism. This development is expected to enhance the network's efficiency and scalability, setting the stage for further advancements in Cardano's blockchain technology.