Although its name is still unknown, many websites call it "Pie" already, but the certain thing is that Android 9.0 is already available for testing. The first Developer Preview build of Google's upcoming major Android version comes with many improvements under the hood (support for HEIC images, WiFi Location with WiFi RTT), as well as support for edge-to-edge displays with cutouts and multiple interface changes.
https://www.notebookcheck.net/Android-9-0-Developer-Preview-available-for-download.287684.0.html