Agree with BD. The routings are not in the public domain and won't be for some time I'd imagine. It is fair to say though that the strategy is one of vertical segregation so that tracks can be crossed at a safe point after departure.
The media are wrong. The new runway will be mixed-mode, the other two will then go back to segregated (mixed-mode being an interim measure); alternation in a three runway operation will depend largly on the regulator's view of things.
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