Zibo has been known to be in service for quite a few months now, whats not known is the status for 121,122 and 132 which are quite close being in service.
Zibo belongs to the Sixth, which is an ace formation. The fact that the squadron has extensive experience with this class, likely made adoption and commission of the ship much quicker and easier. Other ships of this squadron include 150, 151, 152, and 153 --- all four are 052C, followed by 154 and 155, which are 052D. The next ship afterwards is going to be 157 Nanning from Jiangnan.
121 Qiqihar is in Dalian and 122 Tangshan is in Jiangnan. I am not sure if 121 is still having problems or the 10th division is still dragging its feet. 122 will be its squadmate with the 10th. The 10th is transition from Ludas to 052D abruptly, but already has two 052Ds, 119 Guiyang and 120 Chengdu.
132 Suzhou will be the next ship to go for the 3rd. This squadron is transitioning from the four Sovremenny, 136, 137, 138 and 139. 136 and 137 has been refitted, but 138 and 139 has not. The last we saw of 136 is that refit was finished and it was on trials last year, the last we saw on 137 is that it is in the middle of its MLU. The squad's current lead ship is 131 Taiyuan which is leading the Gulf of Aden task force right now.
Another 052DL ship has begun trials recently and that would be 162. That would be destined to the 2nd in the South Fleet, along with 161 Hohhot. Other ships in this squadron is the 167 Shenzhen, 168 Guanzhou and 169 Wuhan, being 051B and 052B ships, these are old. 168 is currently down in refit but 169 is still operating. So 161 is the only truly modern ship for an important squadron --- this formation covers the 071s based in Zhanjiang --- and so it desperately needs upgrade.
There are currently four 052DLs in the water outside of the fitting pool in Jiangnan. 122 is the only one that has a pennant number, but one might guess, the other three unmarked ships should be 157, 132 and 162.
A pattern has risen and the 052DL is being used to fill squadrons with older ships. They begin by sending one or two ships of 052D as a seed ship for training and acclimation to the type, before sending more of the 052DL.