And apparently, not every game will be able to take in the name changes? Something like that?
"This feature is compatible with PS4 games originally published after April 1, 2018, and a large majority of the most-played PS4 games that were released before this date. However, please note not all games and applications for PS4, PS3 and PS Vita systems are guaranteed to support the online ID change, and users may occasionally encounter issues or errors in certain games. If for any reason you experience issues after changing your ID, you can revert back to your original ID for free at any time (you will only be able to revert once during the preview program). Reverting back to an old ID will resolve most issues caused by the ID change. In addition, when this feature officially launches, a list of compatible games published before April 1, 2018, will be provided on
PlayStation.com for reference before you make a change."
PSN Online ID Change Feature Entering PlayStation Preview Program Soon
Great that PS+ users get a discount though.