It’s going to be slightly baffling that you will be able to buy a little C-Class with a V8 but the bigger, more luxurious CLS you won’t. Just think about that for a second; the model in between the E-Class and S-Class won’t be able to be bought with a V8.
I’m sure someone will come along and tell me it’s all for the customers benefit though, much like the “you can have any colour interior as long as it’s black sir” schtick.