If there are two Type 055 floating in this picture, that means the second Type 055 that was being fitted on another dock, has moved back to the area. If you have four floating Type 052D, then one of the 052D, probably the one at the topmost right corner, hasn't still found its forever home with the PLAN yet.
According to Icloo at the PDF, no photo but the buzz on the Chinese internet is that the 2nd Type 055 from Jiangnan has begun sea trials a few days ago.