I just checked out IGN and they had a bunch of photos of the opening of their limited edition copy of Skyward Sword. Not sure what was to be included, I look on the page and this caught my eye:
Upon squinting after being able to read "Orchestra CD," it turns out that the disk is a 25th Anniversary album. IGN couldn't reveal the track list, but I'm hopeful in both that it will have great tracks and great arrangements. But who knows? I don't think that Nintendo has to work very hard on making sure that they have interesting arrangements--most of the Zelda fanbase will eat this up regardless. That being said, I might just go pre-order myself a copy despite my skepticism (it has a nifty golden Wiimote included, too!).