Here some interesting videos from Project 22800.
The first one is from Uragan 567, uploaded one year ago.
The second is from Shkval 584, posted in may this year.
The third one is from Burya 578, posted on 24 October. Burya was launched on 23 October, so its really a very recent one.
All three videos give us some nice birdviews and a better look on all the vessels.
So it seems Pella Shipyard from Sankt Petersburg is quite productive.
I just wonder if there is a system/logic sequence of the registration numbers on the hulls.
As a bonus here a video of Uragan 567 under sea trials, posted in May 2018.