Folks at ETrade Supply seem to have got their hands on the back casing as well as the middle housing of HTC M7. From the looks of these parts, they do match the leaked renders and images, although there is no way to authenticate if they are indeed M7 parts.
As we can see in the video, M7 is very similar to HTC Butterfly in the design elements although it seems much simpler. We can also see the dedicated camera button, which is certainly a great edition. Looks like HTC has been listening to user feedback and everyone wants dedicated camera button instead of soft ones.
No other details are available right now, but previous reports indicate, the phone will come with features like 4.7-inch 1080p display, quad-core S4 Pro processor, 2GB RAM, 13MP rear camera, front camera and Jelly Bean.