In the latest issue of GameInformer Nintendo of America's Head of Localization Bill Trinen have a few things to say about the Twilight Princess.
Commenting on the proposed ESRB rating for TP, Trinen said he expects "the game to get a T rating because of the more realistic graphics, so because of that you may see scenes and situations in the game that wouldn't have fit in a game like Wind Waker.""With Twilight Princess, the depth of story and its connections to past games means not only does it have twice the text as Wind Waker, but it includes a fair number of legacy terms that originate in past games, so consistency is a big focus there," Trinen noted. "We've also been given the opportunity to provide a lot of input on everything from play control to character design, so over time our role has grown from simply localizing the Zelda games to almost being a branch of the development team itself."
Here is the definition of a T rating:
"Titles rated T (Teen) have content that may be suitable for ages 13 and older. Titles in this category may contain violence, suggestive themes, crude humour, minimal blood, simulated gambling, and/or infrequent use of strong language."