No More Heroes: Heroes’ Paradise may not be scheduled for release outside of Japan yet, but those familiar with the game may want to check out the updated visuals and Japanese voice acting.
If you plan on importing it then you might want to know that it seems like the PS3 version might be censored. The X-box 360 version has a Cero Z (similar to AO rating) rating and the PlayStation 3 has a Cero D rating (Mature).
It looks better, but I can’t imagine laying down full price for it having already played the original. Maybe if it comes out here with a budget price point or something.