that because they have "casting calls" doesn't mean something isn't going to be all stars. They would still do casting if they wanted All Stars to be a surprise and use them for latter seasons. For real, every time I see someone say "No, it's not all stars because they are doing casting" Do you really think they wouldn't do any casting if it was All Stars and they want to keep it secret..?
Yep. For the first all star season they still did casting calls because I went to one that year and when I found out it was an all star season I was pissed that I even wasted time going!