Episode Duscae is a nice bonus, but I would easily still buy Type-0 without it. I'm looking forward to it because it's a highly praised FF title that actually breaks the mold of FF titles. I also want to support it because I'd like to see more good games get localized.
Speaking of which, I got the e-mail yesterday saying my pre-order for the Collector's Edition was charged. HYPE! HYPE! HYPE! Won't be long now. I also ordered the hardcover guide yesterday. Yes, I'm really doing it up for this game, heh.