The Cornetto Trilogy consists of Shaun of the Dead (2004), Hot Fuzz (2007), and The World’s End (2013). Three of my favorite movies! They are not thematically related, but they have many of the same cast and crew and they all reference Cornettos (sort of a British version of American drumsticks).

Simon Pegg has said that, while he ABHORS the idea of rebooting Shaun of the Dead, he and Edgar Wright have been discussing a fourth movie.

Summary of the three movies:
https://en.wikipedia.org/wiki/Three_Flavours_Cornetto

Interview with Simon Pegg:
https://www.hollywoodreporter.com/tv/tv-features/simon-pegg-the-boys-shaun-of-the-dead-20th-anniversary-1235937268/

Summary and Analysis:
https://movieweb.com/simon-pegg-teases-new-project-with-hot-fuzz-director-edgar-wright/