Well, on yesterday Sony announced to have all the services restored this week. And from the developer's perspective, it seems that the PSN will be so much more robust like never before. Also, they say that the new security with commercing and the PS Store is now more secure than the xbox 360.
Today, Sony announced to momentarily shut down PSN for the last several hours of maintenance. Im not sure if they started already because they did give us a notice that if you are already signed in, you can still play online.