It's not going to go into any M models as it's not an M engine. It'll start replacing the NA 4.8 in the 5, 6, 7, X5. I'm pretty sure that the X5 will get it really soon after the X6, but it's not clear whether BMW is going to throw the engine into the 5, 6, and 7 now or wait until their next gen of those cars.
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