You can download the Second Preview (PDF only) here (13.5 MB).
And you can download the Second Preview’s companion content here (64.9 MB).
The full original version of the eBook can be viewed below.
And where's the download link?
The eBook can also be accessed directly within SlideShare www.slideshare.net/.../microsoft-press-ebook-programming-windows-8-apps
Interested in Windows 8 development the 2nd Preview of Kraig Brockschmidt's FREE ebook is coming on today 20/08/2012 it can be downloaded here - bit.ly/OBOmbr