The soundtrack came with a mini CD (CPDA-1009) with sound effects and character voices, a booklet, an obi, and a black sticker on the front of the case. It did not come with a back insert.
The promotional edition is identical to the retail edition only with a sample sticker on the obi, covering the barcode. The discs do not have sample text printed around the spindle hole.
1. Obi with sample sticker
Thanks to Birkin's Lab (image 1).