Windows 10 upgrade: You'll have to wait

Though Microsoft said a month ago that Windows 10 would become available on July 29, Microsoft clarified on Thursday that everyone won't be able to upgrade on that day

Microsoft will roll-out upgrades slowly, in waves.

In a blog post, Windows Chief Terry Myerson said that Windows 10 upgrades will first go to "Windows Insiders," a group of 5 million people who have been testing out a preview version of Windows 10.

After the "Insiders," Microsoft will begin notifying people who reserved copies of Windows 10 that they can upgrade, "slowly scaling up after July 29," Myerson said. If you already reserved a copy, your PC has been confirmed as compatible.

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