Even if Shenmue III has mediocre sales, the fact that the modern engine and graphical foundation will be complete, gives great reason for there to be a Shenmue IV & V. They may respectively release each one 2-3 years after the other, like Shenmue II, or release them in a collection, similarly to Shenmue I & II. Many promising options to consider. Will be interesting to see how that story unfolds...