Odd, it appears to have been released today. Quite sudden, I hadn't heard anything about it.
Anyway, here are some links:
Square-Enix Shop (Japanese)
Advent Children (First english site I found with info)
I'm getting hold of a copy as I write this (
), so I'll give you a quick review when I'm done.
I'm quite shocked. This must've been released to build the hype for FFVII:AC. Did anyone else know about this? FF's Piano Collections are great, I'm so glad they've finally released one for FFVII!
Update: Well, I've given it a listen, it's great! Makes me feel very nostalgic, I haven't listened to any Final Fantasy music in ages. Although I'm not sure if it's any better than the other Piano Collections, it's hard to say. It sticks fairly close to the originals most of the time, unlike the FFVIII PC where the arrangements were pretty crazy. Not completely though, songs like Fighting and JENOVA have really interesting arrangements.
Gets the thumbs up from me.