Are they going to make Carrie 3?

As of my limited knowledge up to April 2023, there is no official announcement or confirmation about the development or production of a Carrie 3 movie. However, the possibility of a third installment in the Carrie film series largely depends on the success, reception, and box office performance of any potential previous sequels or the decisions made by the rights holders, producers, and studio involved.

For the most up-to-date and accurate information, I recommend consulting official sources such as the production company responsible for the Carrie film franchise or reputable entertainment news websites.