While the report doesn't explain the purported 3D tech in detail, it seems we're talking about a dual camera setup enhanced with infrared light sensors to allow for operation in darkness. It sounds like the kind of technology that the Amazon Fire Phone flaunts, only there would be two cameras instead of four. A tree-dimensional interface gets mentioned as well, further reminding us of Amazon's past initiatives.
An LG official acknowledged a dual camera initiative, reminding that LG has already experimented with dual camera technology in the Optimus 3D smartphone from 2011, and that accomplishing a strong user experience is not difficult, as long as the adequate technology is available.
Moreover, the report implies that LG's Nexus phone will be introduced in October, shipping with Android M out of the box. Another feature that made the same list of rumors is a fingerprint scanner, which we've heard of before. Its addition will go nicely with Android M's native implementation of fingerprint-based security.
Source: iNews24 (Translated) via G For Games