The games' existence was teased when the PS Vita version of Rocketbirds: Hardboiled Chicken released, as there was an extra called Rocketbirds Two on the extras menu. It featured concept art of various types of Transdimensional Space Owls and Vehicles. While it wasn't given an official announcement, when the team received the PlayStation 4 kits, they begun work.
Sian Yue Tan stated on the PlayStation U.S. Blog that his team will be reusing the PhyreEngine from its prequel, as they have the work and experience on it.
In the official Rocketbirds Facebook, the team confirmed the sequel with a teaser photo.