In a nutshell, the name changes are likely to affect a small percentage of characters, and NCsoft will be adding one or two letters onto the end of duplicate names depending on original name length. Additionally, all daevas will be given a free name-change. "When the merge maintenance is completed on July 14th, 2010, you'll be able to log in and use your free Character Name Change ticket to change your name. All uses of that Character Name Change ticket will be on a first come, first served basis," NCsoft said in a press release.
Check out all the details at the official website.