Well, we hate wishful thinking as much as the next guy, but if that's not a dead giveaway that the developer preview of Android P is just around the corner, we don't know what is.
Usually, the operating system's early previews arrive without any warning and surprise anyone in the blogosphere that's even remotely invested in Android. Not all new features are available in these developer-centric early alpha versions, but the majority of changes made by Google are up there.
We already know that Google I/O '18 will take place between May 8-10, and naturally, version 9.0 of the popular OS will be among the chief topics detailed on stage. A recent puzzle game developed by Google to showcase the invite for the upcoming developer summit rather obviously hints at the name of Android 9.0 being Pineapple Pie, but we wouldn't take this one for granted given Google's history of casually trolling us this way.
As far as what features could end up being on Android 9.0's feature list, our guess is currently as good as yours.