When are new episodes added? February 19, 2019 19:58 Updated New episodes are available in the Cartoon Network app the day after they air on Cartoon Network. Related articles Why am I getting errors while trying to log in? Can I watch the Cartoon Network app on my TV? I used to be able to log into this site with my Comcast Xfinity credentials, but now I am getting an error. How can I fix this?