Scored a 20th Anniversary Pack from my local EB today. Yeah, i heard they got them in so I went for it. I'm pretty satisfied with what they give you. The art book and timeline are really nice and most of the CD tracks are worth it. The stylus wasn't as long as I expected it to be. It's still pretty sweet for a collectable item, though.
I kind of wished the actually case that holds all the contents was a hardback. It's really thin and can get smushed real easy. Anyone who pre-ordered the game should definitely try and see if they can get their Anniversary pack a little early.
Btw, I didn't know Michiru Yamane(SotN fame) and Yuzo Koshiro(Streets of Rage, Shinobi III, Actraiser, etc) are composing the music for Portrait of Ruin. Sounds like a killer music team right there.