I also have not heard anything back from them, my application is not necessarily great so i am not expecting much, but i do think there should be some more virtual visit invitations to be sent out today (or at least i really hope so too)
The interview invitations posted here were sent very very early, and i would expect if they had sent all the invitations already, then we would have seen more submitted here.
We can only wait and see at this point ? good luck!