Just a quick update here – it looks like the 2nd Japanese Single will include some stickers!
From my current understanding:
First Press Limited Edition [w/ DVD] – Random card out of 9 & photobooklet (same as genie.. this hasn’t changed). No stickers
Limited Press Edition [w/ DVD] – Front cover sticker
Regular Edition [no DVD] – Back cover sticker
It is noted that not all sellers will have the stickers, so read carefully before ordering!