We haven't heard from the attacker in a long time now, and it looks as though he's not going to return any of the funds he stole from Poloniex. We have made our recommendations to busoni as to what he should do, and the decision is up to him.
We have never heard from the attacker. It is Busoni that we haven't heard from for a long time. Poloniex has been frozen for a long time without word. Negative speculation about this has spread to the IRC on several of the other exchanges, seeing as it is effecting other currencies.