From today's Announcement on Discord
On Wednesday, November 19th, at 11AM PST, all servers will be coming down for a patch.
During this downtime, we will also be merging some servers.
Veil of Azeris and Blackmoon will be merging into Stormona.
Ossari will be merging into Havensong.
Edit on Patch day: An addition to server merges, Bakamel was merged into Havensong as well.
No level 1 characters will be moved.
When server merges happen, duplicate character names will be appended with either a number or an X (or multiple x's depending on how many of that character name exist). The good news is each character can be renamed once using the new /rename command. Simply type /rename followed by the new name. If the command fails due to a name already in use, it will not count as your single use allowance per character.
This downtime is expected to last approximately 5 hours.
If you run into any issues, please open a support ticket