As draakdorei has mentioned, but I don't think actual dances are out yet.
Also, those additional emotes cost 1k Rank Points each, as well as something like 1G? Can't remember exactly, since I haven't looked at that for a long time.
Future updates in content should increase the number that we can have.
MissyRestia MissyRinslet (PU), MissyFianna (ME) | Guild: WhiteDawn | Faction: Royal Guards | Server: Andromeda