NBC has given freshman drama Grimm an order for an additional 9 episodes, making for a full season of 22 episodes ordered.
NBC has also announced that Grimm will air on Thursday, December 8 at 10pm, but it still scheduled to air a new episode on Friday, December 9 and beyond. Perhaps sort of a one time tryout for the big leagues away from the Friday scripted show minors.
This should come as no surprise to anyone paying attention to the ratings. After stabilizing it's ratings with last Friday's 1.6 I wondered if a full season order might not be right around the corner. Both the Bubble Watch and Renew / Cancel Index currently predict Grimm is more likely to be renewed than canceled for another season.