The highly anticipated fourth installment of "High School Musical 4" is happening and it is expected that the original cast, Zac Efron, and Vanessa Hudgens will feature in the musical romantic comedy film series.

According to earlier reports, the original character Troy Bolton, played by Efron and Gabriella Montez, played by Hudgens would be making a cameo in the film. Rumors suggest that the expected storyline would be that post high school, Troy, and Gabriella would break up. But, a reunion is on the horizon as they both are called back to the East High School as vocal coaches.

However, the main focus of "High School Musical 4" would not be on Troy and Gabriella as a talented new generation would be introduced, who can sing as well as act.

Earlier in March, Disney had announced the auditions for the characters of Campbell, Erin, Nathalie, Derek, and, Tamara. The channel had announced that they are searching for talents who would give the new lead characters a breath of life. However, no further details about who landed the roles were announced and there are no confirmed reports about the cast of "High School Musical 4."

Moreover, neither Efron nor Hudgens has made any announcement about being a part of "High School Musical 4."

In other reports, it is being said that Hudgens may not be back at all since Austin Butler, her current boyfriend, has barred her from establishing a connection once again with her former real and reel boyfriend, Efron.

The air date of "High School Musical 4" is also unclear like the cast as previously it was speculated that the fourth edition of the musical film series would air by the end of this year. But, now it is being said that it will be aired in 2017.