Wiki has 5 on 5 for Singles, and 10 on 10 for the TAG. However, it wouldn't be unlike WWE to change that without any proper announcement. So far it does seem 4 on 4 for some reason in both men's and women's
I feel like Charlotte only mentioned 4 Smackdown divas too. Nikki Bella, Alexa Bliss, Becky Lynch, and I forget the other(Carmella I assume?).
Wonder where this leaves Sasha. Another injury angle?