When does The Koala Brothers return?

The Koala Brothers is a stop-motion animated children's television series. It features the adventures of two twin koala brothers named Frank and Buster, who pilot an aeroplane as they seek to help their friends in a sleepy town in the Australian outback. The series originally premiered on CBeebies on 1 September 2003 until the 79th episode's airing on 31 October 2007.