This is the first time I've heard of it, but I'm definitely intrigued! The character designs look so cute, the world looks interesting and colorful with detail, and the battle system doesn't look half bad.
Why's the battle princess the battle princess, though? Is it a monster/skirmish-of-the-week thing with levels, or a gotta catch erm conquer 'em all thing to turn a principality into an empire, or is there some evil overlord who captured her parents which is why she's still a princess and not a queen, or...?
Well, I guess I can only answer that by playing, hey? (Or...reading reviews after it comes out.)