On mine I tried it "natively" and in DALL-E mode and the results were basically identical, I think they haven't actually rolled it out to everyone yet.

It's rolling out to everyone starting today but i'm not sure if everyone has it yet. Does it generate top down for you (picture goes from mostly blurry to clear starting from the top) like in their presentation ?

No it didn't generate like that. Thanks for clarifying. I have updated my original post.