https://www.techradar.com/news/leaked-google-pixel-3-xl-photos-show-the-phone-off-from-every-angle

Just yesterday a couple of images seemingly showing a Pixel 3 XL prototype emerged, and now the same source is back with a bunch more shots, showing every side of the phone.

The images come from XDA Developers member meraz9000, who also confirmed that the Pixel 3 XL has a glass back, suggesting it might well support wireless charging.