Purported camera details leaked for HTC Marlin (Google Pixel XL)21
HTC Nexus (M1) = Marlin = Pixel XL will be featured with Sony IMX378 (12mp) main camera and IMX179 (8mp) front camera.— LlabTooFeR (@LlabTooFeR) September 2, 2016
Not much is known about the Sony IMX378, though its number suggests a generous upgrade over the IMX278 that adorned the Google Nexus 5X and Nexus 6P. The rear shooters of last year's models really did excel, which was particularly satisfying since Nexuses haven't always harbored a strong reputation in this field.
It's still early days, but the pieces so seem in place for another laudable photographic performance. Here's very much hoping that HTC, Sony and Google's combined efforts don't disappoint.