During PlayStation's E3 2017 press conference, Horizon: Zero Dawn's

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Horizon: Zero Dawn - The Frozen Wilds E3 2017 Reveal Trailer Stills 8 IMAGES

A new trailer for the DLC debuted at the start of the PlayStation conference, showcasing the return of Aloy. It will be released in 2017. You'll need the base Horizon: Zero Dawn game to play the DLC. Sony recently revealed that Horizon has now sold 3.4 million copies , over 915,000 of which were digital copies. Back in March, more than 2.6 million units of Horizon: Zero Dawn were sold worldwide during the game's first two weeks on sale, becoming the best-selling new first-party IP on PlayStation 4, as well as Guerrilla Games' "biggest debut."For more on Horizon: Zero Dawn, which got new photo mode enhancements last month, read our review and then read up on why we think Horizon is so addictive For more on PlayStation and all things E3 stay tuned to IGN's E3 2017 hub

Jonathon Dornbush is an Associate Editor for IGN. Find him on Twitter @jmdornbush