WWE is still hoping to get The Undertaker to work a match before Wrestlemania XXX at one of the pay-per-views left this year. Unable to get a deal together for him to work SummerSlam, the new target is Survivor Series.
While there is no way of nailing down a definitive program three months out, we're told there was talk of doing something with The Wyatt Family. WWE likes the idea of a legend like Undertaker working with some of their up and coming talent, hence what he did with The Shield after Wrestlemania 29 this year.
At this point whether or not Undertaker works before Wrestlemania is completely up to him.