Update: PSN likely not returning this week..
As per the US playstation blog, it looks as though we won’t be jumping online this week after all. The system is undergoing further internal testing to see if its safe and sound from intrusion. The further testing makes a functionality return this week unlikely.
We were unaware of the extent of the attack on Sony Online Entertainment servers, and we are taking this opportunity to conduct further testing of the incredibly complex system.
The rest of the post goes on to apologize some more. Not the best news.