I think both Haruhi fans and Key fans(as well as FMP fans) are frustrated by KyoAni's one project at a time approach, as each of us wants our favorite thing animated next. I am still hoping that Spring 2012 brings us more Haruhi since there are some awesomesauce stories that have yet to be animated.
I do think this is Key trying to build interest in a 2013 run of Little Busters. I think it is very possible that KyoAni will go back to the Key well. Of course, they'd really show their animation chops by animating more Full Metal Panic(but after more Haruhi makes Kadokawa and KyoAni enough money that they can just animate FMP and Kadokawa can make money on the merchandise since FMP won't sell as much as Key or K-ON or Haruhi.)