Welcome to the new (and now only) Fora!
Yup. Let a mod know and we'll do it for you. Your sign-in username will stay the same but the handle that's displayed will be the new one
Actually reading posts before responding to them seems to be a problem for a number of people on here...
Just to add, I can also change the sign-in name, but it's not as clean of a process- it requires a re-activation step.