We’re excited to announce that the online ID change feature on PSN is officially launching to all PlayStation 4 owners later today. You’ll also be able to change your online ID via a web browser, and that feature will also be available starting today. Thanks to all of you who participated in the beta preview program back in October/November and who gave us your feedback!
Sounds like it is happening today.
Edit: Should probably read PSN name change vice PS4 but you get the point.