Well I know the eyes are similar. Both rainbow coloured. LOVE THE EYE THIS YEAR.
However I do have a feeling BB13 might be a bit like BB8? Maybe with a swing of BB9 too?
I can imagine some ugly older person like Carole from BB8. Some quirky older characters too maybe like Belinda/Lisa BB9 but they are not going to have too many oldies are they

Immature, attractive teeny boppers like Chanelle and Samanda. I rather not have another Samanda but having another Chanelle and Emily would be great.
I can sense there will be groups divided like BB9.
We will have a mixture of good looking people, ugly ones, freaks, older people, normal people and hopefully some intelligent people.