Google first started rolling out Marshmallow Factory Images for their existing Nexus lineup of devices a few weeks back. They soon followed it up by posting the factory images of their recently launched LG made Nexus 5X.
However the factory images of the flagship Huawei Nexus 6P weren't available until today. However unlike the smaller brother, the Nexus 6P has two factory images. The two images dubbed MDA89D and MDB08K are available for download via this link.
Nevertheless it still isn't clear why Google has uploaded two factory images for Huawei made 6P. However support for Project Fi may be one of the apparent reasons behind the presence of the two factory images.
Just in case you are completely unaware regarding what a factory images exactly is, let us remind you that the images are mainly meant for Android developers or enthusiasts who wants to make a fresh installation of the firmware. Hence the factory images aren't of much use to the average users.