2019/20 GLE with straight-six?
Per Autoweek, it looks like the next GLE 43 may be replaced by the 53 and perhaps the 63 AMG becomes the 53 AMG (if it follows the CLS)? "The GLE midsize crossover is another candidate for a 53 model. The GLE will be redesigned in 2018 with a likely U.S. on-sale date in early 2019. The AMG model would come after that."