A Dutch website claims to have laid its hands on official Google Pixel 3 and 3 XL images. They contain no surprises compared to the leaks on the same subjects that have gone before it. However, these images do show the phones in traditionally Google-like fabric cases.
https://www.notebookcheck.net/Yet-more-content-claimed-as-Pixel-3-3-XL-leaks-purported-as-press-images-this-time.333226.0.html