A notice has been published on Microsoft's support site for Windows 10 stating that the rollout for the scheduled update for October 2018 (version 1809) has been paused. It seems a number of users have reported grave issues with the update, including considerable loss of data and even detrimental effects on a device's battery life.
https://www.notebookcheck.net/Microsoft-pauses-Windows-10-update-due-to-file-deletion-fears.337272.0.html