Is it intentional that previous usernames are visible again in this new site design?

BlackLicorice said:
Is it intentional that previous usernames are visible again in this new site design?

They're only visible to the user themselves and admins. You can check this out for yourself by clicking my name. I have a name change where I switched from notmenotyou to NotMeNotYou. You shouldn't be able to see the previous name on my profile.