If ships are being built in a fast mass production pace, its unlikely to be different from each other. Furthermore, such a pace of production is also like to express satisfaction with the base design that they're not likely to introduce a new variation soon. So its likely to be the same type of ship.
However, though visually it seems that the ship in Huangpu is starting to look different and there is a question whether its a 054A being built there. I had more of the impression from the hull's appearance that its actually more of a 052C type.