Sequel alert! We thought the East High graduation meant we had to say bye-bye to our fave Wildcats, but great news! High School Musical 4 is on the way! Disney has just announced that there is a new cast of characters in the next HSM installment that will air on TV. Jemma McKenzie Brown, Justin Martin, and Matt Prokop who were introduced in HSM 3 will return to East High's halls in the fourth movie. What can we expect from the new cast? There will be a love triangle and a huge rivalry between the Wildcats and the West High Knights. What do you think of this sequel?