After three and a half months, SpaceX could launch a new rocket this December. SpaceX grounded its rockets for more than three months after September's Falcon 9 explosion. The company struggled to determine the cause of the accident with Elon Musk stating that the explosion was caused by a "really surprising problem that's never been encountered before in the history of rocketry."
Musk later said that the cause of the accident was "a combination of liquid helium, advanced carbon fiber composites, and solid oxygen." He also expressed his hope that SpaceX will launch their next Falcon 9 rocket in December.
It seems that might happen on December 16th when SpaceX should launch satellites for Iridium Communications, a company that provides communications services through a constellation of more than 60 satellites.