We already knew Nintendo would be concentrating on The Legend of Zelda for Wii U (and NX next spring) at this year's E3, but questions lingered as to whether there would be room for anything else at from Nintendo—other Wii U games, or upcoming titles for 3DS.
In a word: No.
For years, Nintendo has reserved the one and only Tuesday during E3, at 9am Pacific, for its event, be it a press conference or a Direct video. This year, Nintendo's Treehouse will broadcast The Legend of Zelda for Wii U live beginning sharply at the usual time on Tuesday, June 14, to provide "the world's first in-depth look at the game."
Developers will join Treehouse hosts on-screen to divulge more information about the game, so you can probably expect cameos from the likes of Eiji Aonuma and Shigeru Miyamoto, as well as other principals on the game.
Nintendo's transforming its E3 booth into Hyrule on earth as well; anyone in attendance is welcome to jump in line and be among the first to play the game. For those at home, Nintendo's YouTube, Twitch, and E3 pages will host videos divulging behind-the-scenes info.
As a reminder, Zelda U will also come to NX when the console releases next March, but no information on the NX version of the game or the console itself will be discussed at E3.
The message from Nintendo seems to be clear: Zelda is the company's focus this year because, well, there's little else coming down the pipe. Not for Wii U, anyway.
Editor's opinion: I don't see this as a bad thing. At this point, it's all but known that Nintendo has dropped the Wii U (and possibly the 3DS, if the console/handheld hybrid rumors are to be believed), so it makes sense to show the one remaining ace of its sleeve: a new Legend of Zelda title, and the subject of much curiosity and debate for years, now. We'll get a look at the NX, its hardware, and its launch library later this year. For now, as a Zelda super fan dying to know more about the game (like, for example, its proper subtitle), I am content with Nintendo's E3 plans.