Samsung hides Galaxy S9 3D images in its Unpacked 2018 app for the media to view using AR10
The images reveal a few things. There will be a model of the phone in Lilac Purple. Also appearing is the Bixby button. The images hint at a dual speaker system for the handset, and the new placement of the fingerprint scanner, underneath the camera, can be seen. The flash and heart rate modules appear to have been changed from last year's Samsung Galaxy S8.
Even if you are not a member of the media, you can still use the Samsung Unpacked 2018 app to view the live stream of the Galaxy S9/S9+ unveiling. To download it on your Android device, click on this link.