Not sure they will make the bosses harder, your right they are bit easy some are a bit hard but hey im hyped up too for Oot 3D i wonder if they will add anything additional, ive played nintendo version as well
As you can see in my Ocarina of Time 3DS blog, they are including the Master Quest version of Ocarina of Time on the cartridge. They've also hinted at the possibility of adding new content. Iwata said about a day ago that Ocarina of Time 3DS has some "interesting things" in it. That seems to assert my previous statement as true.
In any case, we'll see when the game is released in June.
It's my job to help the next generation, and set a good example for them. And for that I'll gladly lay down my life.