Update: April 3, 2018
The F95 X5 M prototype has finally reappeared! It now wears the same level of production parts as the
latest G05 X5 prototypes.
The next X5 M will be powered by the F90 M5's S63 engine, but it may receive a very small power bump over the F90 M5's 600 HP. Production will begin in 2019 as a 2020 model year (in US).