Jin had recently announced the release a collaboration

Jin/Instagram
Jin had recently announced the release a collaboration at BTS's Busan concert. He said, “I have a new album coming out. It’s not that big of a deal. It’s just a single. I was able to collaborate with someone I really adore. I have a lot of contents to share with you so I hope you enjoy them.”
Now, Army has been speculating that the collaboration is with the British rock band Coldplay, with whom BTS had collaborated earlier for 'My Universe.'
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soloist jin x coldplay let's go!!
— ً (@jinniesarchives) October 18, 2022
pic.twitter.com/0c1jLkLnQy
JIN x COLDPLAY!!?!?! I KNEW IT WAS GOING TO BE THEM ððð I KNOW JIN WAS SOOOO HAPPY ABOUT!!! HE LOVES COLDPLAY SOOOO MUCH!!!! pic.twitter.com/5WQmMvpLjk
— Tiffany Leighanne (@MsTiffanyLeigh) October 18, 2022