I thought it might be useful to dedicate a thread to apparent visual changes between the Model X mule or mules seen in 2015, compared to the original public prototypes. Even though it is possible, likely even given the camo, that the mule(s) don't represent the final production vehicle, there are still plenty of things that have changed that can be indicative of what has changed since 2012-2013. Note, when I say "new" in this post, I'm not suggesting necessarily the latest, the production version, simply that these things in the mule(s) are new compared to the old prototypes we are used to seeing. What I'm looking for are indications of Tesla's design direction and/or development history on the Model X, not proof of final design of course. Here is my list - can you point out more obvious visual changes? As a help I will use image from jerjozwik's helpful post and from earlier post(s). - The least camouflaged difference are the sides. To the casual observer they might not be that different, but look a little more closely and a lot of stuff has changed. For one, the falcon wing doors are shorter, giving the illusion of a shorter car. (If, in fact the Model X prototype wheelbase was longer than Model S, production model could also be shorter than the prototype wheelbase-wise.) Part of the rear of the falcon wing is heavily taped over, making determining its length and full shape harder. - The hemline of the car is obviously shaped differently and so is the shoulder line around the rear windows especially. While the chrome trim on the windows curves more gently on the prototype, the mule(s) have more straight lines. Of course on both of the occasions the new mule(s) have been seen, a part of the rear of the falcon wing is heavily taped over, so it is unknown if something has changed there as well or if it is just taped shut to keep it from accidentally opening in public. - Near the roof, the side windows on the falcon wings may extend closer towards the roof. The windows seem to be higher than before. - The second most obvious difference is the front, around the nosecone and the bonnet. First of all, the areas where the bonnet meets the sides of the body and the nose have been sharpened considerably. There seems to be a fairly consistent sharpening of overall lines of the vehicle throughout. - Also, considering leaks of unknown veracity that the nosecone would be gone (and even the wild wild speculation that Tesla might dump nosecone entirely in a Model S facelift), there is something definitely going on in that area as well in the mule(s). The November update and the mule images match perfectly in the side and front detail that can be seen. Where there used to be the top of the nose cone, the bonnet now clearly extends lower. On the mule we can see a slit and a shaped Tesla logo that extends to the bumper, the nose and the bonnet in this area are obviously new. - That said, the camouflaged bumper in both the latest and the dock mule outings certainly has shapes that could hide a, perhaps redesigned, nosecone still. Or the mule(s) could sport camo/prototype bumpers. Finally, there is speculation these latest images come from Tesla and that the lower parts of the front are disguised in post-processing to be blacked out. Looking at the image certainly looks like someone applied Mosaic filter in Photoshop to that part of the image. On the "dock mule", the nose probably had extensive camo making it stick out more than it really does - again, suggesting something to hide there. - The rear seems to have changed the least, but even there are many smaller changes. The most intriguing after the hitch, of course, is the question what - if anything - is hidden beneath the camo under the rear window. Maybe it is there just to throw off the shape, but it could also indicate a design change in this area. If you want to go to the wildly speculative, Audi A7 has an extending spoiler in the very same area. Another speculation would be that the rear window actually extends lower and this camo is there to cover something in that area. - Other changes in the rear include a new diffuser and a bumper that isn't split painted/non-painted as high up, a new smaller shape around the license plate, redesigned tail lights - especially in the lower inside corner of the lights, but also in a sharpened inside edge as well. All these sharpening of lines, if in any way indicative of final production status, suggest the design changes to the Model X have made it a little less curvy in places, a little more modern perhaps in that sense. - And of course there is the mysterious rear hole and the hitch. I think image from the earlier mule shoot may give an indication on how high the hitch will stand. That said, a hitch, hitch mount and even the hole in the bumper may of course be part of some entirely temporary mule setup and nothing to do with an eventual factory installed hitch. - The design of the lights, while blacked out partially, is new both front and rear. - Interior can't be seen here, but if the November update image is anything to go by, the re-design of the falcon wings also extend to a less bulky-looking design on the insides of the doors as well.