Apple filed U.S. Patent #8,631,047 on June 15, 2010. The patent that was granted on January 14, 2014 covers all the usual steps of stereoscopic 3D editing as commonly found in Sony Vegas Pro, Grass Valley Edius 7, and Adobe Premiere+After Effects.
Most probably, this is a sign Apple will introduce 3D editing in its next version of Final Cut Pro. Maybe in time for the next NAB in Las Vegas in March 2014?
Source: Stereoscopynews.com
Nice of them to catch up, 3 years late, but well done anyway