Sorry - the q was when ONE of us dies, will the named beneficiaries ( = remaindermen) be informed ? no.
They arent inheriting....
Once probate has been given (and so Mic or yourself erm clean up) one of the unlucky unendowed non-beneficiaries can, like I can, apply for a copy of the will of the deceased one. They would have, of course, have to have .... suspicions or else they wouldnt be motiveated to appply for a copy of the will.
sorry: your question was clearer once I had read it a few times.