Microsoft has just released the Windows 10 SDK to developers. The OS version 10030.12513 of Windows Mobile 10 SDK is bit advanced compared to the last preview release build 12498.
Screenshots posted on some Twitter accounts suggest the SDK Build has the new messaging app with multiple services integration promised by Microsoft as coming in future builds, and also has a native call blocking feature. The call blocking feature looks neat and seems to be a redesigned version of what we already have on Lumia devices (exclusive feature).
