While promoting their ABC show Once Upon a Time at WonderCon this weekend, Tron: Legacy writers Edward Kitsis and Adam Horowitz dropped a few details on what's in store for Tron 3

"We are working on a sequel," said Horowitz in a roundtable interview attended by io9 . "Eddie and I aren't writing the sequel -- because of the show [Once Upon a Time] we've moved to be co-producers on it. But there's a script being written right now.""Dave DiGilio is writing it," added Kitsis. "[ Joseph Kosinski ] is right now shooting Oblivion, but we've had a lot of meetings and conversations and we've seen the first draft of the Tron sequel."When asked about the possibility of Jeff Bridges reprising his role as Kevin Flynn -- even though () his character presumably died at the end of Legacy -- Horowitz responded, "I would say the definition of life and death in the digital realm --" finished Kitsis, "Will be explored in the sequel!"On whether or not Olivia Wilde's Quorra would also return, Horowitz paused for a moment and coyly darted away to the next roundtable.