A few hours ago, Sony PlayStation announced that PS4 users will finally be able to change their PSN Online ID. This feature it's not actually available yet but should be up in a few hours!
EDIT: you can now change your PSN ID
Keep reading for all the details...
All PS4 games originally published on or after April 1 2018, have been developed to support the online ID change feature. However, since they have not all been specifically tested with the feature, it's not guarantee that they will support it. For more details and information, check out this before making a change to your online ID. Do keep in mind that the large majority of most actively played PS4 games support the feature.
How to change your PSN ID:
PlayStation 4:
- Step 1: From your PS4 go to [Settings].
- Step 2: Select [Account Management] > [Account Information] > [Profile] > [Online ID].
- Step 3: Enter an Online ID of your choice or choose from one of the suggestions.
- Step 4: Follow the on-screen prompts to complete the change.
Web browser:
- Step 1: Sign in to your PlayStation Network account and select PSN Profile in the menu.
- Step 2: Select the Edit button that’s next to your Online ID.
- Step 3: Enter an Online ID of your choice or choose from one of the suggestions.
- Step 4: Follow the on-screen prompts to complete the change.