ChainCatcher news, according to official information, Flow has released an update on the testnet migration situation: while preparing for the upcoming Crescendo testnet upgrade, we discovered that a core smart contract, FiatToken, has not yet been upgraded for Cadence 1.0. FiatToken is a key dependency that affects hundreds of contracts.To avoid disruptions in the dependency of smart contracts and to improve the developer experience for builders on Flow, the testnet upgrade has been temporarily postponed while we work with the contract owners on the upgrade. The community will be informed in a timely manner once a clear roadmap and timeline are established.