/biz/ - Business & Finance

>Cortina Upgrade 1.10.0 will activate on the Avalanche Mainnet at 11 AM ET on Tuesday, April 25th.
>X-Chain Linearization
>Cortina migrates the X-Chain to run Snowman++ consensus and operate as a totally-ordered blockchain in a process called “linearization”.
>Linearization is seamless and should not result in any downtime on the P-Chain, C-Chain, or any Subnets. The X-Chain will, however, be briefly inaccessible.

>Batched Delegator Rewards
>Cortina modifies how these delegation fees are distributed for all validators that begin staking after the Cortina Activation (previously staked validators will see no change). Instead of sending a fee UTXO for each successful delegation period, fees are now batched during a node’s entire validation period and are distributed when it is unstaked.

>Increased C-Chain Gas Limit
>Since Apricot Phase 1, the C-Chain block gas limit has been set to 8M gas.
>Blocks on the C-Chain are produced every ~2s, so this setting limits the max amount of gas that can be consumed every 10s to ~40M gas. The gas target for every rolling 10s window, however, is set to 15M gas. This means that when more than 15M gas is used in a 10s window, the gas price will go up (and go down when less than 15M is used).

>As different developers on Avalanche began to deploy more complex dApps, they’ve expressed that 8M gas per block isn’t enough for their use case.
>Cortina increases the C-Chain block gas limit to 15M gas. To avoid increasing the amount of resources required to validate the Primary Network, the gas target will remain unchanged at 15M gas per 10s.

https://medium.com/avalancheavax/cortina-x-chain-linearization-a1d9305553f6