It's a strange article in that it focuses so much on how the Lily promotional video was not actually an accurate representation of how the prototype Lily worked at that time, but more of a "wish list" or demo of what it will work like when it's finished.

We all know when Steve introduced the iPhone it was a complete fake - the signal bars were faked, the engineers were sweating that it would crash, Steve had to do things in precisely the correct order, etc.[1]

Of course, it's a prototype, not the final product!

[1] http://www.nytimes.com/2013/10/06/magazine/and-then-steve-sa...