Board Thread:General Discussion/@comment-26471695-20160529133707/@comment-1213372-20160602164921

From what I gather, both Uncle Grandpa and Steven Universe were renewed for fourth and fifth seasons, but in UG's case they're splitting one season's worth of episodes in two and stopping after that. As for Steven Universe, it is unknown if those two seasons are the last as of the article date.

http://www.cartoonbrew.com/tv/cartoon-network-lied-us-uncle-grandpa-ending-production-138629.html

As for the last part of Brook's post, yes that would be a smart move, but I doubt CN even cares about doing that anymore, especially with their current mindset.