Sony appears to be slowly sending out emails alerting PSN users of a upcoming change.
All PlayStation Network accounts will be changed over to Sony Entertainment Network accounts. Simply put, PSN is now SEN.
Turns out on February 7th there will be new forms to agree to in order to continue to using the PS3’s online services.
The change is in name only; no usernames or passwords will need to be altered. Sony says this move is to help unify PSN(SEN) and other Sony Entertainment services.
In overwhelmingly positive news: this means that PSN can never be hacked again. Because it no longer exists.