Talking about Czech, there was a preview on Czech Television's programme Game Page...
http://www.youtube.com/watch?v=oyveolKNHs4
I don't know whether it is already mentioned here. It is in Czech.
They are talking about non-linear campaign, that you can play the campaign with 4 other players online, that for developers the main problem is available time :], about war being mainly about people (so the interaction is crucial), fighting in realistic distances, AI avoiding dangerous places (places that has been previously a target of fire), about "Linda program" growing trees realistically, about that head-swinging improves the immersion, climbing over fences improves the mobility,
about AI not standing/crawling in the middle of the street ant being able to fight in huge scale areas...if you need an exact translation, maybe I could provide it, but I don't think there is any extremely important unknown information.