Much like Felix D'eer from the first film, Barnabas is a new character created for the movie who wasn't in any of Beatrix Potter's original stories nor any previous adaptations.
This marks the final appearance of the 1967 MPAA logo in the end credits for any feature-length film.
Originally releasing on 3 April 2020, the COVID-19 pandemic delayed it to August 2020 and eventually 11 June 2021.
In the first movie Peter talked to Thomas McGregor. This movie Thomas says rabbits can't understand him.