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I don't know, but I saw the trailers a long time ago, even on TV. From the Heroes series, they'll only keep the Barbarian, plus there will be some kind of shaman, and I don't remember who else they'll add.
P.S. By the way, if you're interested, I posted about Icewind Dale in the Adventure Journal; you can take a look, there are screenshots there too. It's true that there are fewer quests in the first part, and there are more battles in it, although the second one is almost the same. But Baldur's Gate is better, and other games are too.