Super Junior‘s Donghae hinted at an upcoming Super Junior sub group by sharing a picture through his official Twitter account. On September 12 the singer wrote on his Twitter, “Super Junior’s new unit during recording. Please anticipate.” He also added a picture he took of himself, Ryeowook, Eunhyuk, and (what looks like) Zhoumi. The four members are clearly in a recording booth and hold up v-signs or thumbs up for the picture. His Twitter followers did exactly as he asked them to and expressed their excitement about this upcoming sub unit. The netizens also expressed their curiosity of what kind of song they were recording. With Zhoumi in the picture, the sub group may be for an upcoming Super Junior-M track. Stay tuned to Soompi for more developments on this Super Junior sub group!