A short while ago, it was revealed that LG had ended future software support for the V20, ensuring that the flagship would be stuck on the only major OS update it received: Oreo. It would appear that LG has made a U-turn on that decision, and the V20 could receive Pie after all.
https://www.notebookcheck.net/LG-backtracks-on-its-stance-promises-Pie-for-the-ignored-LG-V20.396571.0.html