D&D 5E Is the new setting Icewind Dale?

@Birmy pointed out this Reddit comment.

Add that to the image WotC put out with the upcoming announcement.

And they're selling apparel featuring a snowy owlbear.

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[Remathilis]

Maybe is the case not to rely on definitions due to the fact that RPG is NOT physics nor math.

Nonsense. D&D has always had clear and precise terminology that can never be confused. Like "level".