Microsoft has released an optional Windows 7 and Windows Server 2008 R2 SP1 update that let’s customers who have signed up for extended security update test if their devices are ready. Microsoft allows business customers to pay for, and in some cases get for free, continued security updates after the operating system stops being supported. The Extended Security Updates (ESU) program goes into effect on January 14, 2020 and to make sure that customers devices are properly configured, Microsoft released the optional KB4528069 test update.
Source: https://www.bleepingcomputer.com/news/microsoft/new-update-lets-windows-users-test-extended-security-updates/