The new Dominion box set for W:AoS could be considered a starter set for the upcoming 3fd edition of W:AoS.
It will include 21 Stormcast dudes, 39 Orcs with some hobgoblin like figures, an exclusive core rule book, a starter booklet, 14 warscrolls for figures in box, and 2 allegiance ability cards.
The 21 stormecast seem to have a new look to them, while the 39 orcs/hobgoblins seem to be highly detailed, although I am beginning to think that is a bit fiddly when it comes to painting these kinds of models. Sort of like some figures are when it comes to constructing them (example: Warcry).
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My personal sense is it might be nice to have the orcs while not enjoying the thought of painting all that detail, yet have no interest in the Storm cast crud stuff, and will more likely go buy a Stormcrud Warcry set instead, because of the eagles in there, and might give a go to painting those cast dudes, someday.