I'm under the impression that Steam players must purchase their version of 3.0 through Steam.

What this means that a physical CE copy, digital copy or a physical copy would not work, since it is not the steam version.

While I'm waiting for more information from steam regarding their pre-orders, do we still have the option to get the collector's edition bonuses, or even the early-access codes if it is purchased through steam? I'm coming up with nothing from both the steam community or here.