Scott26 had previously denied the return of an 8er as it would pretendedly step on the RR Wraith's toes... But he had also denied a potential 9er for the same reason that it would encroach on the RR Ghost's turf, and yet we now know that the 9er might well become reality. The tables may well have shifted since, the VFL Concept probably garnered much more interest in key markets than expected and BMW probably realized that RR customers will not cross-shop with BMW so there is little risk of cannibalization.
If the 9er goes to production, why not supplementing the 7er with a 2 door coupé version (= 8er), even more so given the splendid S-Class Coupé Merc has come up with. Building the 7er, 8er, 9er, X7 and potentially a large 4 door coupé reminiscent of the CS Concept (= 8er Gran Coupé?) seems like a huge investment, but if the luxury markets especially in China are growing quickly enough why not