first of all it should be $150-$200USD
the card should be 8x 4.0 seeing as that was a problem with running the 6500XT on older systems, it should have 6gb GDDR6 on a 96bit bus.
Transferring the PS5 APU die from N7 to N6 reduced its size from 300mm2 to 260mm2, a reduction of 13%
if AMD were to transfer Navi 23 from N7 to N6 it would be reduced from 237mm2 to 206mm2.
I know its just a rough estimation it would mean roughly 257*206mm2 dies from a wafer compared to 219*237mm2 dies.