Blizzard has announced 2 new servers today, one PvP and one PvE. Both are coming online for server transfers first and will character creation will be added later.

We're opening up two new realms for character transfer, Monday March 13 at 3:00 AM PST.

New Realm: Korgath - Deadline: Thursday, March 16 at 3:00 PM PST
Players with characters on the following two realms will have an opportunity to transfer to Korgath, a new PvP realm. If you're interested in transferring your characters from these realms to Korgath, please click here.

Kil'Jaeden –> Korgath
Tichondrius –> Korgath

New Realm: Muradin - Deadline: Thursday, March 16 at 3:00 PM PST
Players with characters on the following four realms will have an opportunity to transfer their characters to Muradin, a new PvE realm. Characters transfers from these realms to the new realms will be available until Thursday, March 16 at 3:00 PM PST.

Doomhammer –> Muradin
Icecrown –> Muradin
Proudmoore –> Muradin
Uther –> Muradin

To transfer your character you should visit Blizzard's website here.