Google's next-generation Pixelbook 2 has leaked out ahead of launch by the company itself as part of a Facebook advertisement. Also present in the ad is what looks to be the notch-less smaller Google Pixel 3 leaving little to be revealed during Google's official October 9 launch event.
https://www.notebookcheck.net/Next-gen-Pixelbook-2-Google-Chromebook-leaks-out-in-pictures.329546.0.html