Seven females, but presumably they are still no nearer to adding males to this single sex group? They would need to introduce (more than one) strong adult males to be able to stand up to this established female group and I think they fear the consequences/difficulties of that- and that's apart from the fence shortcomings.So I rather doubt anything will ever happen for them.
I like this type of, detailed and more personal, zoo signage compared to the usual generic and basic species signs. I like to know which animals they are and a bit of interesting information about them.