TL;DR Mysten Labs has released Sui testnet v1.80.1 using protocol version 137. The build includes updates across protocol logic, GraphQL, JSON-RPC and archival services. This is a testnet release and should not be described as a live Sui mainnet upgrade. Mysten Labs has published Sui testnet v1.80.1, giving developers and infrastructure operators an early look at protocol version 137 changes before they move further through the release process. The build touches several parts of the stack, from