The notification let users know that "After 10 years, support for Windows 7 is nearing an end." It continues:
"January 14, 2020 is the last day Microsoft will offer security updates and technical support for computers running Windows 7. We know change can be difficult, that's why we're reaching out early to help you back up your files and prepare for what's next."
There is a checkbox for users who prefer that Microsoft not notify them again about the support deadline. And the notification page includes a "Learn more" link to Microsoft's Windows 7 page, which focuses on moving to Windows 10 (preferably on a new device).