Winter is coming . . . to Storybrooke. The cast of Once Upon a Time  appeared at Comic-Con  this weekend and gave some great intel on season four of the fantasy series and showed a clip of Frozen's Anna and Elsa on the show. While that clip isn't yet available, we do have the promo for the new season, which teases Frozen at the end. Check it out, and stay tuned — we'll update with the new clip as soon as possible! You'll also want to watch Ginnifer Goodwin's supercute message to fans .