Exciting news! Definitely gonna be pre-ordering this.
Random nostalgia: I genuinely hated FFXI's music way back when I first heard it. I think I listened to the soundtrack once and then stashed it on my shelf and went back to FFIX and FFX. So disappointed. Eventually I came back to it and segments began to grow on me. After a while I found I was listening to it on a regular basis.
After a massive computer upgrade I finally started playing FFXI (I think Chains of Promathia had been out for a while and Aht Urhgan was already announced). The moment I created my character I was totally hooked. The game, the world, the music; I loved them all. I played for several years and made some great friends and had a lot of fun times. During the summer I literally lived in my room playing FFXI. The only time I stopped was to go to work and, only when necessary, sleep.
Now FFXI is one of my favorite soundtracks. I know a big portion of it is the memories I associate with the music, but I think the music genuinely grew on me too. I didn't understand it at first, but Mizuta really did capture the world of Vana'diel. If I had the time and energy I would go back in a heartbeat. But alas, growing up means being responsible and so I'll just have to settle for the music and the memories. :3