‘High School Musical 4’ Spoilers & Update: Zac Efron, Vanessa Hudgens Reunion Highly Possible?

"High School Musical 4" might see Zac Efron return as Troy Bolton. Recent speculations point to his reunion with Vanessa Hudgens in the sequel, following a cryptic post he shared online.

Efron, whose performance as Troy Bolton catapulted him to stardom, may have hinted at his return in "High School Musical 4" through a throwback photo. The actor shared his picture with Ashley Tisdale, Corbin Bleu and Vanessa Hudgens on his Instagram and added a meaningful message.

The "Baywatch" star clearly felt nostalgic and decided to reminisce on "one of the most cherished and exciting times of his life." Efron even added a "love you guys forever" caption on the snap. His photo certainly intrigued and raised fans' hope to see him and Hudgens reunite in "High School Musical 4." Users expressed their wish to see the exes reunite in the sequel in the comments section.

The throwback photo may not necessarily point to Efron's return as Troy Bolton in "High School Musical 4." However, according to Korea Portal, Efron could be subtly sending a hint to his appearance in the sequel. His caption supposedly teases his interest to see the original casts reunite in the movie. 

It remains uncertain if Efron and Hudgens will reunite in "High School Musical 4." Fans have yet to see them together again following their breakup. They did not see each other when the original casts reunited for the film's 10 Year Anniversary in March. Instead, Efron recorded a video message to his fans.

In related news, Disney is looking to cast five new characters for "High School Musical 4." According to E! News, these characters include Campbell, dubbed as Troy Bolton 2.0, Erin a girl soccer player and Nathalie, a cheerleader. Likewise, there is Tamara, a former cheer squad member and Derek, the bad boy with a soft heart who falls for Erin.

Meanwhile, Disney has yet to make official announcements about the original casts' return. It remains uncertain if Ashley Tisdale, Corbin Bleu, Vanessa Hudgens and Zac Efron will reunite in "High School Musical 4."

 So grateful I came across this picture... With the o.g. crew during one of the most cherished and exciting times of my life. Love you guys forever. #fbf

A post shared by Zac Efron (@zacefron) on May 27, 2016 at 5:42pm PDT