>> this is a harry potter movie but not really. >> there won't be daniel radcliffe. we'll see nomes, fairies, spiders that have eight eyes that are talking. >> reporter: j.k. rowling was trending on twitter. the most successful film franchise of all time has conjured up almost $8 billion. >> but there are also, you know, retail products that have made $7 billion worldwide. universal studios has three theme parks globally and now they're saying that this new spinoff will maybe have atracks at those theme parks. there's a ton of resources. >> reporter: rowling teased fans in a statement, saying the book is neither a prequel nor a sequel to the series but an extension of the wizarding world and rowling adds, though it's set in new york 70 years before harry, it will still be familiar to fans. are fans excited to see another movie in the series?