Mentioned that a while ago. Season 3 will be 13 more episodes to be released this fall. I'm guessing that they got 2 26 episode seasons, but decided to break the second season into a second and third season, probably to help prolong the toy line until the inevitable clearance from store shelves for the TF5 movie toys. Hopefully at least leaving ample room for the G1 inspired Combiner War and Titans Return subbrands. But hey. 52 episodes is at least a round enough number. That's more than TFA got. Shame that the movie pushing the toyline out and CN's terrible slot for that show killed it before the fourth season. They should have made a deal with IDW to just put any finished scripts in comic book form.
While I did like the second season finale, it would have been meh had it not lead to a second part of the season. It was great to see Soundwave briefly emerge out of the phantom zone to make his appearance, as well as seeing Ratchet ("I needed That" and all) get a nice return to the series as well. I really hope to see Starscream and Shockwave, the last 2 Decepticons from the original series that stuck around, make their big debut next season, at least before the show ends.