Aside from the orchestra played at E3 2011, I hate to break it to you, but no Zelda 25th Anniversary Collection.
Quote From: Nintendo Life
There Will Be No Zelda 25th Anniversary Collection
Posted Fri, 17 Jun 2011 by James Newton
"Good news, bad news?
Nintendo is celebrating 25 years since the very first Legend of Zelda, but whereas last year the company celebrated Mario's quarter-century with the much-maligned Super Mario All-Stars 25th Anniversary Edition, the Hero of Time will receive no such compendium.
According to the latest Japanese Iwata Asks article (via Nintendo World Report) Nintendo of America suggested a 25th anniversary collection of Link outings, but Nintendo of Japan wasn't keen on the idea, with Miyamoto and Iwata stating that doing the same thing two years in a row isn't very Nintendo-like.
Of course, Nintendo is still celebrating Zelda's 25th anniversary in a multitude of ways, with orchestral Zelda concerts, a gold Wii Remote Plus for Legend of Zelda: Skyward Sword, a free download of Four Swords and of course the release of Legend of Zelda: Ocarina of Time 3D. Would you like a 25th anniversary collection though? What games would you choose for it, and on what format?"
Source
Oh well, I guess it's too bad that we're not having anything as part of the celebration except the Gold Wii Remote and a bunch of Zelda games in 2011.