The Canadair CL-415 (later, Bombardier 415) is an amphibious aircraft designed for firefighting from the air. With a capacity of over 6,000 litres, the aircraft is best used for tackling forest fires.
JRollon began developing the CL-415 live on YouTube almost three years ago. In a recent post on x-plane.org, JRollon posted the link to the development playlist, and then posted another message stating he has resumed development on the aircraft. The reason for the long absence was the development of the SIAI-Marchetti SF-260D, and accompanied the post with a single image of the aircraft in Autodesk 3ds Max:
You can check out the livestreams from the development a few years ago here:
Thanks to Discord user MonsterGreen for sourcing the news.