Microsoft has released the preview build 14383 for the Windows 10 Anniversary Update SDK. The SDK is primarily for app developers to prepare their applications for the launch of the free Anniversary Update on Aug. 2.
The update, as first reported by noted Windows leaker WalkingCat on Twitter, comes as Insiders in the Fast Ring can also download the Windows 10 preview build 14383 for PC and Mobile. Microsoft has previously advised developers to not use preview builds of Windows 10 SDKs in a production environment and that it should only be installed on test machines. Also, any apps made on the preview SDK should not be submitted to the Windows Store for publication.