This is the fourth movie collaboration between Anna Kendrick, Rebel Wilson, and Elizabeth Banks. The first being Pitch Perfect (2012), the second, What to Expect When You're Expecting (2012), the third, Pitch Perfect 2 (2015).
According to footage shown at the wrap party, one of the Bella routines will take place in a swimming pool with the Bellas performing like synchronized swimmers. (This was actually shown on the "Blooper" reel that was shown at the wrap party.)
Anna Kendrick posted an Instagram picture with fellow cast members including Rebel Wilson, Hana Mae Lee, Anna Camp and more on 6th of January, 2017 captioned "Team". They were all holding up three fingers to represent the third instalment of the film franchise