I think the first one is 529. The second 054A in HD took a long time to get launched, so it's not too surprising that the number hasn't been painted yet. I have a picture of it from late November, looks like this one, but seemed to have more work done to it.
As far as the Hudong ships goes, the first one is the one that got the pennant 530. The second one is 529 (both have black on the second mast), and that one already has the 529 pennant on it. I think you can find that picture, should be familiar to you, its the one with two Sovermannies.
The new pics might be a third Hudong ship. Note the black on the second mast. The hull color is also different from the two previous Hudong ships. I have been hearing some stories that a third Hudong 054A is being made behind another ship being made in front of it, and obscuring the view inside.
The one that still does not have a pennant on it is a Huangpu ship, the twin sibling to ship 570, also from Huangpu. They got white color on the second masts below the SR64 radar. The number is supposedly either 568 or 569.