Neo will undergo a Neo-CLI v3.6.2 mainnet upgrade on December 4th

According to Neo's official Medium, Neo-CLI v3.6.2 was released on November 17 and will be deployed to the T5 test network on November 21 and to the main network on December 4. Improvements and optimizations in this version include: adding a new system call "CurrentSigners" to obtain the current transaction signer; adding a new function "StrLen" in the native StdLib contract name to obtain the string length in the smart contract; The transaction setting attribute fee of the "conflict" attribute adds a cancellation command in neo-cli and rpc, which is used to cancel transactions that have not yet been uploaded to the chain. This upgrade involves changes to native contracts and virtual machines. When upgrading, it is critical to resynchronize your data. Do not use the old version of the configuration file config.json.