Pantheon: Rise of the Fallen is merging servers with today’s patch, and advising on what will happen with duplicate names.
This comes after confirming that the most recent update set the stage for server consolidation efforts. During Early Access, They've been keeping an eye on server populations as they grow and shrink and migrate, including with last week's opening of the PVP servers.
To handle duplicate names, you may find when you log in that a name may have a number or an x on the end of it. Visionary Realms is going to provide a one-time name change for those who are affected–and open a support ticket–on a first-come, first-served basis.
With today's patch, remaining US West Coast servers are Havensong and Ossari. East Coast servers are Black Moon and Stormona. Both Ossari and Stormona were sharded, with eight other servers shrunk into them. The EU server is Whispering Lands and the Oceania server is Bakamel. The newly-opened PvP servers, The Dead Vault and Union of Shadow, are also available options. These are only Early Access server shards
You can see the full list on the server merge announcement to see if your server was included in the merges.