SecondhandMonday

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It could be a sound for a new character (Sombra?) or some new sound for a map. 

QuantumLemons

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Sounds like a cape/cloak flapping 

Sjordoeplers

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sounds like the play of the game intro where he breathes on his glasses

Ethan Ronningen

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I think that it is something that has to do with the moon map, maybe being teleported there.

flare

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sounds like winston breathing at the end might be getting eletrocuted or teleported