The legendary Masahiro Sakurai, the father of Kirby,and of course Super Smash bros. Has announced via twitter “I should note: In the Nintendo Direct scheduled for 11 p.m. on June 11, a new video of Smash Bros. will be unveiled for the first time, [It will be shown] simultaneously worldwide, here for the first time! Don’t miss it.”
Nintendo announced that it would not do a standard press conference in favor of using Nintendo Direct. Specifically for their E3 news, you can catch it on the Nintendo website at June 12th 1AM Australian Eastern standard time.