**The Harry Potter TV Show Can Tease Elements From The Later Books**
The Harry Potter TV show won't be bound by the same limitations as the original movies. Right from Harry Potter season 1, the story will be able to foreshadow and hint at events that don't take place until much deeper into JK Rowling's books. The release timeline of the books compared to the movies made this a difficult task to achieve during the first adaptation. However, this time around, it becomes a very real possibility.

For instance, the Harry Potter TV actors can all base their performances on key character moments that won't happen until later books. This is an advantage that most of the movie cast didn't have. However, one original actor had much greater awareness than the rest of his colleagues regarding his character's fate. Alan Rickman was the only actor to get Harry Potter spoilers from JK Rowling that covered almost his entire arc. This allowed him to portray Severus Snape in a much more faithful way. By contrast, the other cast members were always a handful of books behind the movies.

**Not All The Harry Potter Books Were Out When The Movies Were Being Made**
The Harry Potter movies were partially dictated by Rowling's writing schedule

The Harry Potter books became popular very quickly. The first novel was published in 1997, with its movie adaptation arriving in 2001.