If you are a part of the Windows Insider program for testing future builds of Windows 10 and Windows 10 Mobile, you will be joined in the near future by your counterparts on the Xbox preview program, and vice-versa. Microsoft's Windows and Devices head Terry Myerson has revealed that both programs will merge after release of the Windows 10 Anniversary Update sometime this summer.
Myerson confirmed that Xbox One is on the same Anniversary Update schedule as Windows 10 for PCs—so a mid-2016 release—and that he planned to merge the Windows Insider program with the Xbox One Preview program after the Anniversary Update. "It doesn't make sense for these to be separate," he said. So it looks like many more Xbox One testers will be able to live on the bleeding edge starting later this year.
There's no word on how this merge will be handled, but it certainly sounds like the Xbox One will be a true Windows 10 PC device after the big update.