Yes, those are the old/original renderings.
I don't think this will be a record holder in terms of skinniness. There are some insanely skinny buildings in places like Chicago, New York and Toronto.
A few examples:
Toronto - 1 King West - 578 feet tall - 51 floors. The tower is 15 meters wide, that comes to 49.21 feet.
http://www.emporis.com/en/wm/bu/?id=...toronto-canada
Hong Kong - The Summit - 721 feet - 65 floors. I'm not sure of the width, but it is a skinny skyscraper!
http://www.emporis.com/en/wm/bu/?id=...hongkong-china
A few more here. Check out the first one in this thread. You might have to look at the photo for a second or two to see what they're talking about. But that little building is only 5.91 feet wide at its base.
http://www.skyscrapercity.com/showthread.php?t=437935