As part of Nintendo’s E3 plans, they’ll be reviving the Nintendo World Championships. During the qualifying rounds, players will compete in the Championship mode of Ultimate NES Remix for the Nintendo 3DS, playing Super Mario Bros., Super Mario Bros. 3, and Dr. Mario. The final round will feature a game that is “a secret to everybody.” This is, of course, a reference to the original Legend of Zelda, which Nintendo has confirmed will be present at the event. The Nintendo World Championships finals kick off at 3:00 pm Pacific on June 15th, with pre-show broadcasts beginning earlier in the day.
Source: Nintendo Direct