RCS iMessage and Android Group Chat Question

Does anybody know if, when Apple officially adopts RCS into iMessage, will group chats that include both iPhones and Androids be the same as group chats that only include iPhones? Primarily, I'm wondering if new members will be able to be added or removed from these group chats once this change occurs without having to start a new conversation (similar to how group chats work if only iPhones are included).