Googled Inconel just to find out what it was. Now that I see what it is, I don't understand how it would be used.
The new battery pack has 90Kwh, up from 85. That, combined with the contact (or w/e, I really haven't been following this closely), enables a greater transfer of power versus the old P85D.
Depending how that power is distributed, you might have a case for providing a bit more power to the rear wheels for the P85 but you'd need really sticky wheels to get that extra to the ground imho. My P85 with stock Conti wheels slips a little when flooring it, so an extra 50hp or so from a better battery pack plus xfer prolly wouldn't mean much. Maybe an increase from 4.0s 0-60 to a 3.8s? And that might be optimistic.