Not exactly true, we already know that they are all ready making differences because there IS for sure going to be a male and female form for vamp lords. The reason why of course is that the vampire lord form has a more humanoid shape to it, unlike the werewolf form. So if they are making a different form based on six, then perhaps they would make a unique form for the beast races (it wouldn't make sense for a cat or lizard to lose its tail when becoming a vampire lord and losing all what made its species unique, and just looking like a mutated elf or human).
I'm pretty sure there will be differences for males and females like you said, but I highly doubt that their looks change according to race. It was said in an interview that they wanted to do that for werewolves but didn't for some reason. So I don't think they would for vampire lords at this point. It would be really cool if they did though!!