After hearing that Suzuki-sama received further financial capital to produce the game, this means that YS will be able to make the Shenmue III that he wants. The best Shenmue news this week wasn't that a "trailer" was shown, it was that Yu Suzuki got much needed financial support to develop the game. I'm confident that the final game will look MUCH better than the trailer we saw this trailer. If this means that Shenmue III gets delayed to 2019 so be it.
Basically that trailer we saw today was Project Berkley 3 trailer. There were significant visual improvements from Project Berkley to Shenmue I. I think we will see the same when Shenmue III goes into full promotion.