I'm pretty sure nothing will be revealed in the ep...what'll happen is a massively intense build-up (probably at the Fields of Trenzelor? Unless they are saving that for season 8..) and then *BAM* there'll be a cliffhanger. Hopefully to be resolved in the 50th. Which we won't get until November.

That's the way I'd like to see it at least, even if the wait will kill me.