I don't know the exact date of when it will air. But I can tell you this, it IS coming out in early 2013. But I don't know the month or day.
Well in the episode where they sneak out with Wendy to the store at the end Dipper tells them he's really 12 and not 13 and Mabel and Dipper are twins so Mabel is 12
the next season of gravity falls starts in october 1st, 2013
Kristen scaal plays Mabel pines in gravity falls.
Kristen Schaal
Mabel's pig in Gravity Falls is named Waddles. He is Mabel's beloved pet pig and often accompanies her on her adventures.
Kristen Schaal
dipper,mabel,soos,grunkelstan,and wendy
The time-traveler in Gravity Falls is Blendin Blandin who job is to stop a series of time problems caused by Mabel and Diper:3
Dipper Pines is taller than Mabel Pines in the animated TV show "Gravity Falls."
A character in Gravity Falls. Also Mabel Pines’s brother, Grunkle Stan’s nephew.
Mabel has sleepovers with Candy and Grenda and Dipper's not happy about sharing the room with Mabel. Soos finds a secret room and then the twins compete over who should have it. The twins switch bodies after Dipper rubs his feet on the carpet and touches Mabel's hand. Later, everyone switches bodies. In the end Mabel and Dipper stays in different rooms, but they're sad about this. Dipper comes to Mabel and then they share the room again. They play mini golf and Dipper hits Stan.
All I know is that Dipper and Mabel are 12 years old.