Microsoft pushed out the Windows 10 Insider Preview Build 10130 to Fast Ring users late last month, and now the company is releasing downloadable ISOs for the build. Microsoft is not yet ready to make this build available to Slow Ring users, but the company is making a special exception in releasing ISO files of the build (Microsoft usually only makes ISOs available after the build has been pushed to the Slow Ring). Specifically, the ISOs are being posted online in response to certain Fast Ring users getting a 0x80246017 error and not being able to upgrade using Windows Update.
Build 10130 will eventually come to the Slow Ring, but the company is still working on fixing several bugs including taskbar flyouts not working properly. For now we will have to wait.
However, if you are on the Fast Ring and are unable to use Windows Update, you can download the appropriate ISO for your language and system (32-bit or 64-bit), mount it, and apply the update by running the installer.
Download the Windows 10 Build 10130 ISO from the Windows Insider website.