Earlier quoted context omitted.
> And he’s successful: he leaked marketing images for Apple Watch Series 4, he found iPhone X glyphs showing the notch, and more. Presumably in violation of the developer program's NDA.
> he leaked marketing images for Apple Watch Series 4 I don’t think this specific one has anything to do with the NDA.
That article clearly indicates he sourced some information from the developer program betas, which would be a violation of the NDA when publicized.