Just read 'I am number four: The lost files, six's legacy'.
It basically is just an advert for 'I am number four', and the upcoming 'The power of six'.
It's pretty lame, it's 19 chapters, each chapter only being a couple of paragraphs. And then to bulk it up a bit, it has an excerpt of a 2 chapters from I am number four, and then a 2 chapters from the upcoming 'The power of six'.

Pretty much a waste of time.

Now I'm reading 'Abraham Lincoln: Vampire Hunter' by Seth Grahame-Smith