already released ? great
I'll have to switch the save from jp version which I didn't finish yet.
No big changes from Japanese to Europe I guess, only the puzzle names (and tutorials&challenges, but I already completed all of them, I didn't have difficulties to understand what to do).
Anyway, it's a great game. If you didn't like picross 2D, you should try it anyway as it's a different system (more line by line than cross-lines).
If you want all the stars, sometime you will have to play fast ! but the timeout is usually correctly set with the difficulty level and makes you enjoy the game even more.