Well, that's a sore point. Check out
Charles Astro . Who is this guy? He's not saying. Some kind of highly educated amateur, I'm guessing. Anyway, his wordpress blog is immensely superior in many ways to the offical NASA New Horizons site. He gives an elaborate and coherent explanation of the extant flyby photos. Perhaps he is mistaken in his interpretation, but he has no peers on the internet. The New Horizons NASA site is a complete mess. They are apparently keeping their cards close to the vest, and the various images and videos are in complete disarray, as they seem to be catering to a grade school mentality. I find the whole thing very distressing.
I should add: At the
Charles Astro link, you need to click on the "three bars" icon at the upper right to access the content. This gives you a menu of the several articales ... "A MODEL FOR PLUTO ..." , "PLUTO'S SUBTLE GLOBAL STRIPES ..." , etc.
That particular mess is nothing compared to the Apollo mess, which is dwarfed by the Clementine mess ... NASA and the US Navy are agencies who have spent billions in space exploration are either hiding something huge or are totally incompetent. You pick.