#1 - July 24, 2014, 6:46 p.m.
Blizzard Post
In an effort to make it clearer which Beta realms should be used for which types of testing, we’ll be renaming the current Beta realms with today’s maintenance. The realms are being renamed as follows:

Lost Isles (PvE) is being renamed to Beta Leveling Realm 01
Gilneas (PvP) is being renamed to Beta Leveling Realm 02
Mekkatorque (PvP) is being renamed to Level 100 PvP

As a result of the rename, some interface settings (such as combat log filters, or add-on configurations) may be lost, and will need to be reconfigured.