LOL, I've just said similar on another thread.
I'm not sure MQB is imagined to last as long as you say though, but I'd guess its good for at least another 5 years.
I'd expect to see some newer engines for MQB first and the whole 100% electric/hybrid/fuel cell tech will be the driving factor....especially if you read my post about the Dutch making petrol power illegal in the near future!