Beamdog has announced the writer for all of that new content coming in the Enhanced Edition of Baldur's Gate: Dave Gross. A very experienced fantasy and D&D writer, Gross has worked for TSR in the past, as well as having written two Forgotten Realms novels. More recently, he says, he was "sitting in a coffee shop complaining about the lack of classic RPGs for the iPad, when [Beamdog's] Trent [Oster] appeared in a sulphurous cloud and said, 'Have I got a job for you.'" Gross will presumably work to update the old game, as well as oversee all the writing on the new content as well.
Elsewhere on that team, artist Nat Jones has also joined up. He's got a background in fantasy and horror comics, and has worked on some story elements in Frank Frazetta's Death Dealer comic series as well. Good to hear there's some substantial talent working on this much-anticipated revival.