Discriminators
One of the annoying problems that we previously had was that creating new accounts with the name you wanted was very difficult. With so many accounts, new players often had to try 10 or more times to get a name that wasn't taken. Since we are merging all platforms accounts into a single account system, we knew that we had to deal with name conflicts anyway, so we have decided to add a "discriminator" number to the end of each account name.
Sub-accounts
The next big change we are making is sub-accounts. There will be many players who have previously created an account on a console platform as well as on PC. These players can now merge these accounts together so that they can play across both platforms. When merging accounts, both sub-accounts will still exist and have their characters listed separately. Which account you are currently using can be selected with the account selection box at the top of the character selection screen after you log in.