I heard that Rikki\Cariba Heine will confirm it on 11th November on facebook and Twitter. Apparently Emma will return for Season 4 and Bella will still be there. So there will be 4 sereias in Season 4. Angus McLaren (Lewis) will probably not be in Season 4 because he is going back to shoot Packed To The Rafters. Luke Mitchell (Will) will also still be there. And when Season 4 is finished, they will talk about making a Season 5 for all the fãs and it all depends on how much ratings they get for Season 4.
Ok, everyone is saying so many different things, this blog is helpful if you are a h2o freak like me and are OBSSESSED with h2o, Cariba Heine, on her facebook posted a couple months atrás that there WILL be a season 4 h2o, including all 4 girls, staying for the entire thing, even Cleo. Some rumors said she was leaving, she is staying for the whole season and so are Bella, Emma, and rikki, Emma comes back. Season for will come out THIS SUMMER OF 2013 watch it if you want!