Complex sentence: Nintendo has confirmed their press conference will take place on June 15,2010 it has also been confirmed that Nintendo will showcase their newly announced Nintendo 3DS, a handheld gaming console that is the successor to its current Nintendo DS series of handhelds.
Split into simpler sentences: Nintendo has confirmed that their press conference will take place on June 15,2010. It has also been confirmed that Nintendo will showcase their newly announced Nintendo 3DS, a handheld gaming console that is the successor to its current Nintendo DS series of handhelds.