A new WU update is now available for Windows 10 Build 10122. The update KB3066096 fixes the issue of “telemetry reports to Microsoft for Windows 10 Insider Preview, the build number is not included in the telemetry report”. You need to restart your device after installing this update.
KB3066096:
When you send telemetry reports to Microsoft for Windows 10 Insider Preview, the build number is not included in the telemetry report.
