www.miamidolphins.com, yet the address looks much longer than that. Probably a photo and not an actual web address. Makes me think it is a photoshopped picture. If someone came across the logo by accident, don't you think you would make sure to take a good photo of it? Or a screen capture. Seems to me like the blurriness is a way to help cover up that it is fake.
If this is the logo the said person would be creating the home page for the revealing of the new logo. Of course the URL would be longer.
Interesting... That could be the dolphin, but not the final logo. It looks like they took creative liberties with the dolphin design to make it the "D" for this particular image. The Dolphin in the logo will undoubtedly have the sunburst behind it and be pointed in the opposite direction.
The one thing I question about this leak... Why is the current (old) logo still up at the top of the mockup?
I don't think it's' legit for reasons people have already pointed out, but that "new logo" don't look half bad.