An article from Friday on GameSpy has quotes from Cameron Tofer of Beamdog's studio Overhaul Games about their recently announced plans for Enhanced Editions of Baldur's Gate and Baldur's Gate II (thanks PC Gamer). In addition to discussion of their plans to update as well as enhance the original RPGs, he explains their long-term goal is indeed to make Baldur's Gate III, though this is just in the talking stage for now, though some of the talk includes the prospects of a Kickstarter campaign to get this going:

"Baldur's Gate 3 has been our long term goal. We have a lot of things to put in place before such a project can be launched. So currently there is no such project but that's the one we want to do. Our thoughts have been that Enhanced Edition for BG 1 and 2 just make sense before there's any Baldur's Gate 3."

"We're totally thinking Kickstarter. It just makes so much sense and solves so many problems. I think what Brian [Fargo] is doing with Wasteland is very interesting."