My D800E was returned today. An initial set of test images using my 24-70 at 50mm shows the center sensor is still very good and the far left and far right sensors are also very good. It needs more testing, but at this point it looks like mine was repaired properly. In the initial test before repair, this same combination and focal length showed the left sensor distinctly out of focus and the right sensor slightly soft.
The notes said: Adjusted AF Operation, Communication + Clean Checked GWO (General Working Order)
It was repaired under warranty at no charge. Total time was 15 days (incl 4 weekend days and shipping both directions) from delivery to Nikon Authorized in Atlanta, shipping to Nikon, and return to Nikon Authorized.
Note - by dropping at Nikon Authorized I've found shipping to Nikon is also covered under warranty.