Hi, Android changes with every update to the way Google develops it. I now have Android 8.1 on my 5X and with each update 6 to 7 and 7 to 8, the appearance was adapted to Android. So the design and the shape of the icons. I'm not 100% sure whether the launcher was also adapted in each case, but it should have been, because as I said, the design changed in each of the major updates.