Hope it continues to sell well.
With so many digital / hardware avenues, there is not reason to dismiss branching revenue streams as baseless ''spin''.
A game can sell 1.5 mil and be considered a success or the other way round, can sell 3.5 mil and be a flop. Its all about maximizing your revenue. Even if Halo 5 sells 2 million, MS will sure as hell make sure they get their money's worth out of it.