Sony has finally announced that names changes for PSN are finally comimg. The first change for everyone is going to be free, then after that if you want to do it again it will cost you $9.99 or $4.99 for PS+ users.
A beta is due to start shortly, and if you have participated in previous firmware betas then you may be lucky enough to get picked. With the name change beta running until the end of November, the full rollout is due in early 2019.
You can see the announcement tweet below.
It's official: the ability to change your PSN Online ID is coming. Here are the first details: https://t.co/dSBprNkjDZ Testing with select users starts soon, full rollout planned for early 2019 pic.twitter.com/4eM4lkNo9y
— PlayStation (@PlayStation) October 10, 2018
You can also read the full blurb on the Playstation Blog