So Microsoft has been offering a free upgrade to Windows 10.
For those of you that have not upgrade for various reasons you need to check that notification.
It seems Microsoft has now changed the options you could Upgrade now or wait till later.
Microsoft has been quietly changing this to We will upgrade your computer on <Date><Time> and giving you the option to cancel.
So if you don't want to upgrade and are not paying attention, you might wake up one day and find you computer has suddenly upgrade to Windows 10 while you were sleeping.