Okay, here are some things that i heard are happening.
* Ben and Amy breakup (hope not)
*Amy and Ricky become a couple (also hope not)
*Grace's dad is hit by a drunk driver and dies. Which is apparently why she's crying in one of the promos.
*Amy's mom is pregnant. (she is in RL)
*Grace apparently tells Jack that she's not in love with him anymore.
ALL ARE RUMORS.
But I think the one where Grace's dad dies is true because she's bawling in the preview.
Watch the preview here:
http://www.youtube.com/watch?v=iwahYHROgOw