Cosmos mainnet successfully upgraded to Cosmos Hub 3

The Cosmos mainnet announced that it successfully upgraded to Cosmos Hub 3 on December 12, 2019 Beijing time. The upgraded Cosmos Hub 3 adds parameter change proposals, module refactoring, supply modules, high-level querying, and also includes event refactoring and other legacy technology updates, which will make development work more efficient and make governance on the chain more fair and just.