The two first announced their plans to get married in October 2015.
SM Entertainment made an official statement about the Girls' Generation leader's comeback.
The group released their previous Korean album, "Chained Up," nearly six months ago.
An insider shared behind-the-scenes info about the 2NE1 leader's upcoming debut.
Hyosung is returning as a soloist over 10 months after she released her last album.
Girl's Day previously had a comeback in July 2015, nearly eight months ago.
According to insiders, the title track has already been selected.
First JYP, now SM has collaborated with FNC Entertainment.
The singer is expected to compete with a slew soloists from her former group, including Taeyeon, Tiffany, and Yuri.
The group has already finished filming their comeback music video hinting their return to the stage is sooner than expected.
The date was announced at the end of the most recent episode of K-pop Star.
Jessica's agency responded to the intial rumors that said Jessica is working on an album and preparing a comeback.
The singer-actress mentioned that she would be working on music projects with the group for the next few months.