The big picture: Microsoft is preparing a big change in how printer manufacturers and customers interact with Windows. In a few years from now, Redmond's operating system won't provide any "official" means for third-party driver distribution. Security and reliability for printing operations will improve as a result, hopefully.
In context: The Transport Layer Security (TLS) protocol is widely used to secure and encrypt internet communications, encompassing emails, instant messaging platforms, VoIP, and HTTPS web traffic. Introduced in 1999, the earliest TLS specifications are now deemed insecure by modern standards.
Aptos is the new default font for Microsoft Office, replacing Calibri. If you are running an older Office version or you want to install it on your system to use with any other applications, you can download it here.