We're probably back to the same old same old - I say that because as I recall it these these danger/restricted areas around Novaya Zemlya got a mention a few months back because some Norwegian academic started speculating about "the big one" on Twitter the basis of a navigation warning...
So...yet again the Russian's notify the world (via a long standing world wide system) that these restricted areas are being activated for possible use.
Various pundits and supposed experts rush to claim "something is up".
For reasons we can only guess at, for example continuing bad weather, lack of funds, kit not ready, chief scientist falls ill, you name it, whatever the reason whatever was planned, which might actually have been quite small scale, doesn't.
Pundits and experts rush back in to the information void to speculate/catastrophise what's gone on.
One day something will happen and it'll be "told you so".
Good work if you can get it but not exactly helpful, or useful.