Cosmos Hub will implement the Lambda upgrade at block height 14470501 on March 15. The Lambda upgrade is the first iteration of Replicated Security and will allow consumer chains to benefit from the use of Cosmos Hub's validator set without having to maintain it separately own set of validators. The consumer chain will benefit from additional security, while ATOM stakers will benefit from a percentage of tokens or fees generated by the consumer chain as staking rewards. Also, there will be brief downtimes during network upgrades, which means transactions and transfers may be delayed.