Made available by xda-developers senior memeber Gabri™, the walls in the slideshow below range in size from half a meg to over 4MB, depending on the image. All of these are rendered in a square aspect ratio, with a resolution of 2560 x 2560, so they're intended as scrollable wallpapers. From what we can tell, these are 100% legit, and not the (poorly) remastered excuse of high-res wallpapers that have been floating around the web for weeks now.
Without any further ado, here they are:
* Wallpapers in slideshow resized to 640px wide. To download the full-sized wallpapers, go HERE.
Thanks for the tip, Galaxytizen!