As I understand, this release will be a manga that will expand the final episode of the anime (which, as I have also come to understand from manga readers, was lack-luster due to being rushed). It will come with a bonus CD that you can listen to while reading the manga. The CD contains what they call a “Plus Encore Remix” in which you can sample 11 of the songs which have been previously released in the Sakamichi no Apollon Anime OST. It’s a medley, and it will be handled by Kanno.
Title: Sakamichi no Apollon Bonus Track Regular Edition
Price: Y952 (Y1000 Tax incl.) [approx. US$ 12.14]
Release Date: November 9, 2012
Purchase from CDJapan.