I do think more regular updates on the main site would be helpful. I know writing stuff like that is a pain in the arse when you are very busy, but the last update was over two months ago (a news piece talking about a Beta release which never happened) and it probably doesn't give a good image of the games progression.
Yes the hardcore XCOM nuts will visit the forum to check for more recent updates and information, but the casual gamer might just look at the main site news and get the impression that development has almost stopped. It could be costing you pre-orders or potential future sales.
Plus your updates on the forum are very well written so you could probably just copy/paste them onto the news page for the most part.
Anyway, just my two cents. I'll go back to anticipating the release of your game. :-)