To me, it seems too much of a coincidence that SIE is releasing planar gaming headphones just before they bought Audeze. I imagine what happened was an announcement of the new Pulse and Explore headsets, followed by Audeze saying they violated patents and a generous offer from SIE.
That seems backwards to me. Pretty sure Sony have been eyeing Audeze and the deal was struck some time ago before being made public now. The Pulse Elite looks to be the Maxwell (driver, dsp, AI NC) in a cheaper build sold for half the price due to scaled up production. Not a copy of some sort. I could be wrong of course.