It seems like vulpera will very likely be an allied race sometime in the future. A lot of people speculated and wanted sethrak to join the Alliance in counterpart to vulpera which would obviously be a Horde race, but with sethrak seemingly being a neutral party with just as much ties to the Horde as the Alliance, unless Blizzard pulls some last minute shenanigans, I don't see them becoming an Alliance allied race.
So what is there really left for the Alliance at this point?