I too have always liked this one -- at least since I first found the site 2002-ish. It has been my background several times over the years during the fall, and it is again right now.
Yesterday, I had a new thought about it: if it is ever "updated," perhaps the level of the sun in the sky might be "lowered." While it might well be an effect of my settings, it seems to me that the overall ambient light level does not seem to match how high the sun is in the sky. In other words, the overall light level and color suggest a later time of day than the sun position does.
That said, if I were re-rating it today, I'd still consider it a 9.5, 'cause I still just love it. Thanks again, Ryan, well done and keep up the good work.