was my first thought on seeing this, but more I think about it, the more likely this leak is faked.
if Aplpe were to do this, they would be making earphones that were incompatible with existing iOS devices, even if they hvae a lightning port. Existing LIghtning ports (I could be wrong) don't contain analogue audio.
So you'd need a pair of "new" lightning headphones for yournew iPhone, and a seperate set of headphones for any other devices you have.
if they went with an inline DAC/AMP, it would at least mean that any lightning headphone will work on any lightning equipped device.