Short answers, pulled from the story.
The Beatles (The Original Studio Recordings), also known as The Beatles: Stereo Box Set, is a sixteen-disc boxed set containing remastered stereo versions of every album in the Beatles catalogue. It was released on the 9th of September 2009 and is the second complete collection of original Beatles recordings after The Beatles Box Set from 1988.
The remastering project was led by EMI senior studio engineers Allan Rouse and Guy Massey. The same team later remastered all of John Lennon's studio albums and Paul McCartney's solo albums reissued by Hear Music.
Yes. The set received the Grammy Award for Best Historical Album at the 53rd Grammy Awards.
Before early 1963, Abbey Road Studios routinely wiped and reused master tapes after mixing down to mono for single release, so true stereo mixes for songs like "Love Me Do" and "She Loves You" no longer exist. Two additional tracks, "Only a Northern Song" and "You Know My Name (Look Up the Number)", also appear in mono because they never received stereo mixes during the Beatles' recording lifetime.
On the 7th of December 2009, a limited edition of thirty thousand apple-shaped USB flash drives was released. Each 16 GB drive contained the full catalogue in 44.1 kHz/24-bit FLAC format, marking the first time the Beatles catalogue was available in high-resolution digital format, along with 320 kbps MP3 copies and visual elements from the boxed set.
The vinyl edition was released on the 12th of November 2012, pressed on 180-gram records and accompanied by a 252-page book and reproductions of original LP inserts including the Sgt. Pepper cardboard cutout sheet.