Regarding our new Season Two finale information, this just gets more and more exciting.
Rumors of Cadence being part of Season Two's finale have been flying around as well, it would make perfect sense that her wedding episode would turn out to be a two-part story. Perhaps she gets captured (please no Shining Armor joins-the-main-six episode), perhaps she is actually evil, perhaps something happens to Celestia and Luna? It's so fun to think about what might happen.
This also adds more possibilities, a new antagonist (or hopefully a returning one/Discord), Elements of Harmony stuff, and of course: story!
I can't wait for this finale, and I sure hope Season Three gets a two-part start as well.