SpaceX to cap busiest year with CRS-13 launch tomorrow [UPDATE: Launch delayed until 12/13]

Update: Today's scheduled launch has been delayed until tomorrow, December 13th, in order to perform additional ground system checks.

SpaceX is scheduled to launch the latest International Space Station (ISS) resupply mission tomorrow, carrying nearly two and a half tons of cargo the ISS.  This launch will be the 17th this year (if I haven't lost track), and is remarkable in that it will be reusing both the Dragon capsule and the Falcon 9 rocket.  The capsule previously visited the ISS in April 2015, while the Falcon 9 is a newer model launched in June of this year.

The launch also marks the return of operations to SLC-40, which has been out of commission since September 2015, when an accident during a static fire test knocked it out of commission.  This will in turn free up LC-39A allowing preparations to continue for the first Falcon Heavy launch, which the company hopes to launch next month.

The launch is schedule for December 12th at 11:46 EST, with a backup window on December 13th at the same time.