901 undergoing fitting out... a few radomes and sensors added... I see a couple of likely AK630 mounts on the side as well, and possibly even a type 1130 mount near the aft smoke stack (though hard to tell).
There may also be an HQ-10 on the bow, but difficult to see.
I expect we'll have a better grasp of the ship's armament in coming months as fitting out continues.
I also wonder if/when they will launch the second unit