The Neo-cli version 3.7.4 has been applied to the T5 test network on May 17, and will be rolled out to the main network on May 24. This update brings several improvements and new features, including:
1. Upgraded secp256k1 signature verification in the CryptoLib native contract.
2. Support for custom witness verification based on Keccak256.
3. Addition of Lambda and Linq functions to the devpack, allowing for more advanced scripting.
4. New Neo contract examples added to the devpack for developers to reference.
5. The ability to call Neo contracts through the command line in neo-cli, making it easier to interact with the network.