They've been inactive for like 1-2 years now I believe. As a group at least. Woolim is in the project group 'The Pink Lady' and has her own youtube channel, Hayoung has moved to an acting company (so I assume this means she has left the group) and for those curious she's acted in a web drama called 'What to do with you' as the main role, Eunjin has a youtube channel, and all the members auditioned for Mixnine.
Anyway, they haven't had a comeback since 'Want You To Say' and I think it's pretty much safe to say the've disbanded. Coridel hasn't promoted them at all since they joined the company, and their Twitter account hasn't been updated in over a year. Even if they do comeback, which I find unlikely, I think it's pretty safe to say that Woolim and Hayoung have both left the group. Sad that things ended like this, but this is the way it happened. They were truly talented and had great music.