User blog comment:Fusedtwilight/SEASON 8!!!!!!/@comment-109.161.183.49-20120526173030/@comment-4807493-20120527021958

No, he said that his garrison is silent and that he can't hear them anymore. Speculated that they have either been killed by the Leviathans or are in hiding. Cas is arguably the first (and only) angel to have entered Purgatory. There's no evidence to suggest that any more angels are there, as it's a place for monsters' souls, and the other 'creatures' that God banished there when he was still around.