As I said, I do not know what the journalists will discuss or in what detail. From my experience with the press in teh past, especially in previews as opposed to reviews, they generally hit the high (or low) points of what they saw without going too deeply into spoilers. More like "I played a mage. I went to Kirkwall. I beat some guys. It was good and this is why" rather than "I played as a mage. Here is a step by step account of the first 3 hours of my playthrough. I started off..."
Journalists were offered the Xbox 360, PC and PS3. I'm not sure who wrote about what.
I doubt any of them would post on the forum and answer your questions. They get paid to write articles for you to read, not give it away for free here.