With the immense success garnered by the first two installments of "High School Musical" franchise and the high anticipation for the upcoming "", it is obvious why Walt Disney Pictures are so eager to produce the fourth movie long before the third flick has even hit the production. However, on the upsetting side of the news, it has been hinted from the beginning that some of the original actors may not be coming back for "High School Musical 4".
Back in January 2008, one of "HSM" stars has revealed to MTV that "Senior Year" would be his last participation in the drama musical series. Recently, when doing another interview with the entertainment network, the 20-year-old showed no sign of changing his mind. In fact, he added that he believes most of the original cast may move on to other project following the completion of the third film stating, "This is probably going to be the last one for a lot of the cast. It's graduation, a lot of us have to move on."