Playstation 3: The Unified Sony Entertainment Network is Born
The PlayStation Network has been successfully absorbed by the Sony Entertainment Network. You can no longer refer to a PSN. The SEN has taken over.
The PlayStation Blog recommends that the user download the updated system software. Those who used to hold PSN accounts will have to accept the new Terms of Service. The PSN account will instead be called Sony Entertainment Network as part of a move towards a closer union between PSN and other Entertainment Network services. The change, according to the blog post, will effect the name alone. PSN will remain the same site that players have known it to be. Gamers can still play online or access the latest add-ons and downloadable games. They will still be able to enjoy music, sports and movies at PSN.
There is a more tangible advantage that gamers can perceive with this change. The Internet browser being used by PS3 is now faster, for one. Sony provides an outline of the other details of the changes, which you can find here. These details include setting the date and time automatically, security patches and more.

I have tried the update but it didn’t give out an automatic prompt when I was using my PS3. I had to go to ‘Settings’ and the go on to ‘System Update’ just to download the update. You might want to try this if you are also having trouble with the update not initializing on its own. The unified PSN and SEN may have been considered a complete absorption instead if not for the presence of the original PSN setup. The PlayStation Network remains the same although it carries a different name. It would be nice though if you can get the time to read the new Terms of Service just to know what you are in for now that SEN has taken over PSN.