I suspect that the reason for this lack of communication seem to be the enormous weight the fans give to any offhand comment Larian's official makes. We spent pages upon pages discussing and analysing every word Sven said during his last interview with IGN, analysing both what he said and what he didn't. Were I in Larian's shoes, I would also be very careful of what I'm saying, since people seem to draw some very far reaching conclusions from every syllable I say. It seems to me like they comment on things they are absolutely sure about, at least for now
To be fair, I think this immense focus on that IGN interview is a direct result of the lack of direct/frequent communication. We have nothing better to do on these forums than discuss that article.
If there was a patch (or community update, big or small) more often, or a roadmap telling us when to expect these updates, then we'd probably give less weight to every offhand remark Swen makes.