HTC failed to send out the Android Pie update to its devices for a long time but is finally making amends, with the HTC U11 currently receiving the Pie update. The U11+ and U12+ are expected to follow suit in the coming weeks.
https://www.notebookcheck.net/The-HTC-U11-is-finally-receiving-the-Android-Pie-update-U11-and-U12-to-follow.422408.0.html