I don't see any official update from them for existing users, this information can only be found in the terms during registration. It seems to me that this is not the most transparent thing done by them.

OP, Maybe the title is a bit excessive. They introduced some restrictions for certain countries and announced a possible request for KYC information in case they suspect an attempt to circumvent this rule. So for a large number of users, it is still a no-KYC casino.
[....]Perhaps, they have registered a licence under Curacao (I'm not sure about this yet).
This is the first thing that I thought of before opening your topic.
I would rather say that it is not. I think that the Curacao license requires a somewhat longer list of restrictive zones. But maybe this is just the beginning.