According to allkpop website, Minzy, CL and Dara will attend 2014 SBS show Gayo Daejun but without the lead singer Park Bom, who took a break for herself according to the official YG statement.
Park Bom is not participating in any other domestic schedules. She is currently taking time to self-reflect. 2NE1 cannot put on a stage without member Park Bom...
Also according to the same website it is not yet confirmed whether or not they'll perform as 3 members on stage.
The hole incident started when korean tabloid was harassing Park Bom with untrue news about her addiction to medical pills. The incident was happen when Park Bom was filming for reality tv show Room mate ,and the singer decided to leave the reality show.
more details about the scandal here: http://eurodance4ever.blogspot.ro/2014/07/park-bom-involved-in-drug-scandal.html
Is also known the fact in Korea if a kpop idol is involved in scandal is the end, but the european artists doesn't know how is to be in a kpop idol shoes. So be thankful everyday for what you receive and treat others with respect.. who knows one day you may need their help ;)