Bloomberg informs that sources familiar with Samsung's plans claim that the Note 9 is going to be officially unveiled on August 9. The phablet might not be so different from last year's model after all, but at least it is getting a SoC upgrade, improved battery and even an improved rear dual camera, according to Bloomberg's source.
https://www.notebookcheck.net/Samsung-Galaxy-Note-9-to-launch-on-August-9-with-improved-camera-setup.307616.0.html