Patrick O'Grady, director of engineering at Ava Labs, said that Avalanche had activated the Cortina upgrade on the Fuji testnet at 23:00 Beijing time on April 6. Foresight News previously reported that the latest version of AvalancheGo will migrate X-Chain to run the Snowman++ consensus, making X-Chain compatible with Avalanche Warp Messaging and making it easier for exchanges to support X-Chain. The Cortina upgrade also introduces batch delegator reward simplification and increases the C-Chain gas cap, where the batch delegator reward simplifies the distribution of fees for validators with a large number of delegators, batching them over the entire validation period of a node, and Distributed when a node unstakes. In addition, Cortina increased the C-Chain block gas limit to 15 million Gas, which was previously 8 million Gas per block.