Announcing Bot Framework SDK and Tools 4.1 Release

Bot Framework SDK version 4.1 is now available. This update includes the availability of the Bot Framework Emulator, the Web Chat V4, and version 4.1 of the C# and JavaScript SDKs. With this update of the SDK and tools, the team is focusing on periodical releases of the SDK and tools for bot development.
Source: Microsoft Azure – aggiornamenti