Nick, the popular belief is that the most likely, earliest scenario for a Series (Animated or otherwise), is that once STID proves it's a money maker, that could lead to commissioning of the Series, and that Series would be slated to begin to air right after the 3rd movie (Which is what JJ signed on for, was 3 movies) is released, so it could ride the steam of the whole Trilogy. If this is the way it went down, there would be concern about the movies of the Series contradicting each other's canon because both were airing at the same time.
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?