In a press release today, Nintendo revealed that they will "provide information about upcoming products at its media briefing" and the briefing will be headlined by Nintendo's big three:
Mr. Satoru Iwata, Nintendo Co., Ltd., global president
Mr. Reggie Fils-Aime, Nintendo of America president and chief operating officer
Ms. Cammie Dunaway, Nintendo of America executive vice president of Sales & Marketing
The event is set to take place at Club Nokia on Tuesday June 2 at 9AM