As strange as this sounds, the PS4 is most like to not support playback of 3D Blu-rays, according to the online user guide (spotted by TheSixthAxis).
Even though DVDs and Blu-rays are fully supported and CD support is to be put into the system, the “Playing video on disc” section of the User Guide says that 3D Blu-rays are not supported. Weirdly enough, the PS3 plays 3D Blu-rays without any issues, which makes this even more strange.
Sony has left 3D by the wayside in the past two years, having attempted to push it hard in the middle years of PS3’s lifespan. This would appear to be another nail in its coffin.
However, the word around is that Sony has made it clear that 3D Blu-ray movies “will not be compatible at launch, providing the following statement to Eurogamer: “Technically, the PS4 system supports 3D gameplay at launch on day one, though no launch titles are currently 3D compatible. 3D Blu-ray movies will not be compatible at launch.”
Source: IGN