According to Gaming Today, some bit of Lost Odyssey DLC are going to be released this week, presumably in the US. From the site:
New Downloadable Content for Lost Odyssey is coming to Xbox Live Marketplace April 25. There are three new items included in the DLC. “The Shattered Bond ” unlocks a new dream, the “Killer Machine” ring is forged to specialize in fighting against magic-powered weapons and a “Memory Lamp” for the upgraded Nautilus will allow you to view dreams.
We’ll find out tomorrow whether or not Europe will get this as well.