SM Entertainment will be releasing a new group in August.
Netizens excited because SM has not introduced a new girl group since a debut of f(x) in 2009.
BTW, SM introduced a boy group EXO on April 2012.
A new group is known as foursome and members, all or at least 3, are from "SM Rookies".
SeulGi, Irene, and Wendy have been introduced earlier as members of "SM Rookies".
The remaining one will be unveiled soon.