ZK Rollup-based Ethereum two-layer network zkSync tweeted that the Fair Onboarding Alpha milestone of zkSync 2.0 is coming, allowing developers to test their code in a closed environment, and the new fee model can ensure that transactions and block expansion take into account the overall cost of the system , improving attestation generation performance and fixing all audit findings. The duration of the Fair Onboarding Alpha will be determined in conjunction with ecosystem projects, and timing will follow system security and readiness. During the Fair Onboarding Alpha, the system will be closed to external users, and upon completion will enter the Full Launch Alpha phase and open access to external users.