SONAMOO will return as a 5-member group this February with its first single album in 2 years. 
An insider has shared, "The group is currently producing new songs and the recording has already begun." The impending comeback would finally break a 2-year-long hiatus since the release of digital single album 'HAPPY BOX PART.2' back in November of 2017. Further, this would be the first album as a 5-member group with D.ana, High.D, Minjae,Euijin, and Newsun. 
Stay tuned for updates!  

cr.allkpop
https://www.allkpop.com/article/2020/01/sonamoo-to-make-a-comeback-this-february