I bet my buttons that clan support (since Tremulous was popular mainly because of clans) is implemented there, such as adding tags. I hope these tags will also be limited, for example you register a clan with a tag and then there will be no imposters faking both the membership and name, as it happened in the 1.1 version. The only way to discover him was of course via extended playerlist...
EDIT: I kind of changed my opinion, VOIP would be a smart choice for a public server indeed, also it could work well between two clanleaders so they don't have to write things.