As previously discussed, the new Coen Brothers film will be diving into the 1960s folk music scene. Now it has a title, according to Variety: INSIDE LLEWYN DAVIS. The film will not be a biopic, as Llewyn Davis seems to be a fictional character, but will draw heavily on the New York music scene. i'm sure Dave van Ronk will still very much be in the finished work - perhaps Davis will be an amalgam of people from the time.
Scott Rudin will be producing, and as he's produced NO COUNTRY FOR OLD MEN and TRUE GRIT for the brothers, I'm sure the film is in good hands. The script will be a Coen Brothers original, and Robert Graf will be executive producer. No domestic distributor has been announced yet, but Studio Canal has the international rights.