The Xbox One is continually getting more and more games that it can play from the Xbox 360, and now developers are capitalizing on this feature by reprinting the discs and selling them in new sleeves.

Fallout 3 being reprinted to show it works on Xbox One

Doom 3 reprint
A Reddit user spotted this while at a retail store (thanks VG247), and shared the above images of the game boxes.
This is obviously nothing more than a marketing scheme in an attempt to sell more games, but at least it does also somewhat help out users by letting them know that their disc will continue to work on the latest generation console.
For players specifically looking for 360 games that will work on their Xbox One, it does help them out.