Do not panic.
There is no evidence that Nagra 3 is on the way.
That so called 'safe source' comes from the forum where there are guys trying to make the most out of keys.
If there was some change Cablecom users where the first to know and till this date nothing comes out.
The keys, as usual, are already out but for some sordid reason the guy that usually posts them is holding them back.
Wait and see, it will come out as the 'hero' who as keys.
Been there, done that, it is the Nagra 2 SAT story all over again...