Microsoft is hoping to push out the full version of Windows 10 this summer, but the company won’t have the mobile version of its new operating system ready at the same time. That means you shouldn’t expect an update to your phone, or even new hardware, in the coming months.

“Our phone builds have not been as far along as our PC builds,” Microsoft’s Joe Belfiore said during the BUILD conference in San Francisco this week. “We’re adapting the phone experiences later than we’re adding the PC experiences.”

Microsoft’s vision for Windows 10 is an operating system that spans device sizes, from desktop computers to the Xbox One and tablets and phones. It hopes that strategy will make it easier for developers to deploy apps across all screen sizes easily.

“From the device view, our main focus is to kick off the Windows 10 launch wave with a great launch on the PC,” Belfiore explained, according to The Verge. “You should expect that the other devices — phone, HoloLens, Xbox, Surface Hub — will be staggered, probably not on the same date as the PC.”

Belfiore didn’t provide any hint to when Windows 10 for phones might be ready.