Ben wants to know when he can buy a Windows 10 machine. Leo says it's coming July 29, and if he already has a Windows 7 machine, he can expect to upgrade for free. He should just be on the lookout for the upgrade to the Windows 10 app in his system tray, and sign up to reserve his copy. But not everyone was selected for this free reservation opportunity. When will the new machines be available? Leo says it's probably going to be this August. They'll have some cool features including the Microsoft Hello camera that uses facial recognition to log users in. No more password required.