Take this with a heavy dose of skepticism, but Hasbro Studio's website has updated with pages for the various Hasbro Studios shows, including Transformers Rescue Bots and Transformers Robots in Disguise.
For Transformers Rescue Bots
, it is mentioned that the show has 78, 22 minute episodes - doing the math, that works out at 3 seasons each with 26 episodes.
That would imply that the currently airing third season of the show would be the last, owing to the series reaching the magic number of episodes (65) that allows a show to move into syndication.
On the other hand, it is also possible that this page is simply showing the total number of Rescue Bots episodes that have been commissioned.
On an aside, it is also mentioned that the new series, Transformers Robots in Disguise
, will also run for 78 episodes, or three seasons, with the production of the show being mentioned as covering 2014-16. This might well be the ambition, but we think the show actually making it to this number of episodes will depend on how well the show goes across early on.
In both instances, it is a case of wait and see.