Microsoft have started pushing Windows 10 registrations to you. Microsoft has started promoting Windows 10 to users of Windows 7 and 8. A notification box now popping up for Windows users all around the world and offering to let them register for a copy of the free new OS. Now it’s not clear whether this is an official pre-rollout but users around the world have started to see these notifications. Are you seeing them yet? This is what I received in my email.