A new blog post from the Sony blog said they have begun testing on an internal server. They also stated that they will probably not release PSN until they are certain in will not be intruded again.
The whole story can be read on the US PlayStation blog:
http://blog.us.playstation.com/2011/05/06/service-restoration-update/
The whole story can be read on the US PlayStation blog:
http://blog.us.playstation.com/2011/05/06/service-restoration-update/