Short answers, pulled from the story.
The massive remastering project concluded on the 9th of September 2009. This specific date was chosen because John Lennon held a deep significance for the number nine throughout his life.
The sixteen-disc collection contains remastered stereo versions of every album in the Beatles catalogue. Each album except Past Masters includes a mini-documentary about the record itself.
No stereo mixes exist for the 1963 single She Loves You or its flipside I'll Get You due to Abbey Road Studios practices of wiping master tapes before early 1963. Engineers elected not to create unofficial stereo versions using backing tracks despite technology that could separate components of mono mixes.
A limited edition of thirty thousand apple-shaped USB flash drives was released on the 7th of December 2009. This format marked the first appearance for the Beatles catalogue in high-resolution digital audio encoded at forty-four point one kilohertz.
The set received triple platinum certification by the RIAA in April 2010. It also achieved Diamond status in Canada during March 2010 and won the Grammy Award for Best Historical Album at the fifty-third Grammys ceremony.