What is happening with the Type 056. We haven't seen any new commissionings for some time now.
There were three being fitted at Hudong Zhonghua and can be seen in the background as the Type 075 was rolled out. Three more in fitting can be spotted at Guangdong Huangpu.
The last three from Guangdong Huangpu has visible changes, and I expect the last three from Hudong Zhonghua to follow suit.
First, there is a new high speed data antenna on top of the bridge. This antenna has been spotted on different ships before --- 054A, 052C and 052D --- but not as a new build. The antenna is being retrofitted on the larger ships gradually throughout the fleet, but for the 056A they are installing it new. I am guessing that this HSD like antenna can be a combination of CEC with other ships, helicopters, maritime aircraft and drones, and drone control and navigation.
There are also changes in the Type 726-1 ESM unit, which is also reflected on the last 054A ships and likely on the destroyers. This revision can be seen on the 075. This is a common and standard unit, that is seen with nearly all ships except for the 054A, so I would expect this new revision to be added to new ships and retrofitted on older ones. (The 054A uses a different ESM and ECM unit, but after the 054A+, they reverted to using the Type 726-3 ECM used by the destroyers but kept the ESM. The latest ships have a slight change to this unit.) The Type 056 doesn't use the ESM unit from the 054A but uses the Type 726-1 that are used by the destroyers.
Another change is possibly on one of the SATCOMs. The new SATCOM might be another new standard they are spreading throughout the fleet.
The 30mm cannons on the side had been changed to machine guns.