On January 21, Sonic Korea Mastering Studio’s Chief Engineer Cheon-hoon teased aespa's new release on his Instagram. He wrote, "aespa new single ‘forever’ #aespa #forever #mastering."

@cheon_hoon via Instagram.

Fans are confused but also happy because of the sudden news. However, it appears he put out the information by mistake as he quickly deleted the post.

The song is also rumored to be an unreleased song from SMTown Winter Station, since the single is named "Forever."
 

Track 3, "Coming Home," was already given to NCT U so it's possible that aespa‘s rumored single could be from SMTown Station.