Upcoming

List of Sets coming December 2013:

70720 - Hover Hunter 
70721 - Fighter Kai 
70722 - OverBorg Attack 
70723 - Thunder Raider 
70724 - NinjaCopter 
70725 - Nindroid MechDragon 
70726 - Destructoid

Pictures:

NOW IN STORES!:

Taken from Brickipedia. See the complete list of all Ninjago sets ever released and larger photos of these sets here.