Just over a month ago, the first HTC U12+ units started receiving Android 9.0 Pie. Today, almost a year after the release of Android Pie, European owners are finally getting the latest publicly available version of Android. The changelog, however, isn't very descriptive - it just says it's upgrading the OS to 9.0 Pie and that it brings some system enhancements. Google+ and BlinkFeed are also getting the axe since Google shut its service some time ago. Oh, and the firmware bumps up the U12+ to July security patch. As usual, maybe not all units will receive the OTA update from day one...
Source: https://www.gsmarena.com/htc_u12_receives_android_90_pie_in_europe-news-38557.php