Board Thread:Spoilers!/@comment-6175354-20131105202753/@comment-6175354-20131118164130

DarKingdomHearts wrote: No, she can't die. I won't accept that they let her make a guest appearance for one episode only to let her die. I could see much potential to be a main again when they go to Oz or something. Bringing Ruby back, just to kill her, makes perfect sense.

As for Oz.... do not get your hopes up. The creators have said, more than once, there are no plans on showing Oz, anytime soon.