The two biggest selling points for Windows 10 were the fact that it was a unified platform that worked across all devices, and the promise that Microsoft would be offering a variety of tools that would help developers bring their apps over to the platform, which is especially important for the mobile version of Windows 10. Unfortunately, it looks like Project Astoria, which is the tool that’s supposed to help Android developers easily bring their apps over to Windows 10 Mobile, has been delayed, or possibly even cancelled, for reasons unknown.