If you've been wondering how The Legend of Zelda Ocarina of Time Master Quest differs from the original game, look no further, because there's now a comparison video to show you. The trailer brings the two side by side showing the multiple different enemies, plus the fact that the land of Hyrule is now mirrored to the original.
Also to do with Master Quest, according to GoNintendo, Enemies will now do double the damage to Link as you fight through hordes of them.

Some new screenshots have also come into play with GoNintendo also reporting some new information on improvements made to the game, specifically speaking; the Water Temple.
Besides the easier to select Iron boots, paths will now be easier to find thanks to florescent pictures on the walls. There's also mode that won't be in the Master Quest called Visions.
These Visions can be accessed via Sheika Stones, which are larger versions of the Gossip Stones found in the original. You can now not only access the time, but new players can now get a clue as to what to do next. This is done by giving 3-5 short clips loosely demonstrating where to go or what to do and according to GameXplain are not a walkthrough and do not contain spoilers.
Another mode much talked about is the new Boss Rush mode. This is apparently unlocked after defeating each Boss again within 'Links Memories' which are accessed by going to our hero's bed for a nap. Both Links Memories and the Boss Rush mode are timed with the latter giving you a power up in between fights.
The Legend of Zelda Ocarina Of Time 3D is out this June on the 17th in the EU and the 19th in North America.