Microsoft began the phased process to push the latest version of Windows 10 to systems running older software. Specifically, systems running the October 2018 Update will receive the update to the November 2019 Update over the next few months. Microsoft states in a doc announcing the rollout that this process started now, so people have time to update their systems before they reach end of suppport,
Buy one Galaxy S10 or Note 10 and get one free at Verizon
Beginning today, we will slowly start the phased process to automatically initiate a feature update for devices running the October 2018 Update (Windows 10, version 1809) Home and Pro editions, keeping those devices supported and receiving the monthly updates that are critical to device security and ecosystem health. We are starting this rollout process several months in advance of the end of service date to provide adequate time for a smooth update process.
Windows 10 November 2019 Update: What is it, and what’s included?
The November 2019 Update of Windows 10 focuses largely on bug fixes and improvements. In comparison to other major feature updates, this Windows update acts as more of a service pack, building on top of Windows 10 version 1903, also known as the May 2019 Update.