Not sure if this is the right place to find out/ask but I couldn't find info anywhere else - I know tattoos were removed for update reasons but when are they coming back? My HA looks so not /herself/ without them.

I too am curious about this ...

There's a thread in problems and bugs about them here. c:

At first I was like .. something's off about my avatar. What can it be? gasp No tattoos! Hopefully they'll be back soon! :3

I am also wondering about this, I hope they do come back :)

Tattoos are just for "normal" HA bases right?

Yes - if you're asking if they work on zombie skin then I'm fairly certain the answer is still no. It's part of the reason I cured ^_^