A:Answer Apparently Best Buy's photo is inaccurate. The left side has a cartridge holder, while the right side has a disc holder. You can see it in an update from the developer:
https://www.kickstarter.com/projects/iga/bloodstained-ritual-of-the-night/posts/2515461
As for why it's not included with the PS4 and Xbox1 versions (since it DOES still include a disc holder), I would like to know that as well, since I do not want the Switch version of this game.
