Rumor has it that the series is ending with season 2, and that it will be released some time around February. Its not confirmed if the rumors are true or not, but there are also rumors of 2 Titans appearing for the first time since season 1.
and the Armored Titan
I for one would think that this would be a great injustice to the Anime Series, i see a lot of things happening, a lot of stories, and a lot of questions that hasn't been answered yet, and im pretty sure they'll give those answers as they raise new questions in this season. Hope the rumor isn't true.