From Allkpop:

miss A's Fei is reportedly preparing a solo debut!

According to insider reports on June 22, "Fei is going solo. She will be the first miss A member to release a solo album." JYP Entertainment admittedly confirmed Fei's solo debut reports as they commented, "Yes, it is true." No detailed information has been revealed yet; however, she is evidently aiming to debut this summer. 

I'm so excited ahhhh. I feel like I should have known Fei had something coming up when she renewed her contract?? Because there was no way she was getting a good deal with JYPE before. I really hope she does well. And Jia too. I hope both of their solos are amazing!