Can I apply for development funding but then change my project later to be long form or a film?

It is not encouraged. The Development Program mandate is to support short form series. If during development you attract interest from platforms or other financing to turn the IP into a feature film or TV series, it’s at the producer’s discretion to determine the potential for success in those mediums. If the IP is turned into a feature film or TV series, you would not be eligible to apply for the IPF’s Short Form Series Production Program, the development advance would still be repaid and the IPF would have a stake in the subsequent work.