. . . and by "leaked" we mean "carefully planted to generate buzz on the internet more than a month ahead of the premiere.. Here it is:

One could speculate about that for days. So the new ad agency has an office, but no ashtrays? Sure, no desks, but if there's one thing they need, it's ashtrays, preferably the size of beach umbrellas. The only question is the location of the scene out the window - looks like one of the lesser Rockefeller Center buildings, and that's the Waldorf-Astoria in the background, which would put the new agency on Avenue of the Americas in one of the big dull Rockefeller Center phase-2 buildings. Who cares? Fans care. Believe me, the new office will be the subject of blog-posts and pilgrimages aplenty.

Could be a composite, a mere trick of Photoshop, but that would shake your faith in advertising. (Thanks to New York mag, which has some more details & info.)