In my opinion the 6-series has held its flair quite well over the past years. One thing that I came to think of that it seems to have been around forever... those who say it looks dated today are generally the same people wo did not like it when it was introduced, did not come to understand the design and now they are sick of it.
Introducing a range-topper like this in a models midlife is a great way to boost it, together with a FL. Now, I don't think we will se a 6-series CSL. It should have been reealed in connection with the FL according to our sources...