I really don't think so.
Since the "regular" 6 series is due for a redesign pretty soon.
Unless they just want to call the new 6 an 8. And charge much more for it.
And why not...
I just think that if there is an 8 series, it would be much larger. More like an S-class coupe.
This still looks the same size as a 6 series coupe.
Just for yourselves and tall me what you think.
All the pictures are HERE.