SonyAlphaRumors quotes "very trusted sources" saying that Sony develops a 54MP sensor with an integrated phase-detect AF to appear in cameras in 2015. "This sensor is also the first that has not been designed with a classic RGB (Bayer) pixel structure." It depends on the competition "whether Sony will launch the camera with the new sensor in late 2015 or during 2016."
Thanks to DM for the link!
Sony is known by its experiments with color patterns. In 2003 it added Emerald color to RGB color filter array. In 2010 Sony announced Cinealta super-35mm image sensor with non-Bayer color filter, not to talk about ClearVid 45deg-rotated Bayer pattern used in many Sony consumer and professional video cameras, and older cameras using other exotic patterns.